Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts

2019 Fiscal Year Annual Research Report

• Project/Area Number: 17H06138
• Research Institution: University of Tsukuba
• Principal Investigator: 初貝 安弘 筑波大学, 数理物質系, 教授 (80218495)
• Co-Investigator(Kenkyū-buntansha): 木村 昭夫 広島大学, 先進理工系科学研究科(理), 教授 (00272534) ; 福井 隆裕 茨城大学, 理工学研究科(理学野), 教授 (10322009) ; 高橋 義朗 京都大学, 理学研究科, 教授 (40226907) ; 岩本 敏 東京大学, 先端科学技術研究センター, 教授 (40359667) ; 青木 秀夫 東京大学, 大学院理学系研究科(理学部), 名誉教授 (50114351) ; 河原林 透 東邦大学, 理学部, 教授 (90251488)
• Project Period (FY): 2017-05-31 – 2022-03-31
• Keywords: バルク・エッジ対応 / 冷却原子 / 放射光ARPES / フォトニック結晶 / 高次トポロジカル相 / コーナー状態 / 量子化ベリー位相 / 平坦バンド

Outline of Annual Research Achievements

高次トポロジカル相に関して独自の量子化ベリー位相と量子もつれの方法を用いて，電子系から古典系に至る多様な系で，バルク・エッジ対応を拡張したバルク・コーナー対応を確立しその普遍性を広く示した。また，第一原理電子構造計算による現実の物質における平坦バンドの起源を独自の分子軌道基底の方法で解明しバルク・コーナー対応を示した。また強相関電子系における高次トポロジカルモット絶縁体，磁場下の高次トポロジカル絶縁体を提案し，平方根トポロジカル相の概念や非エルミート系のトポロジカル相の理論など多彩な新概念の意義を確立した。
冷却原子について、トポロジーと乱れの非自明な現象を実験的に見出すことに成功した。乱れの存在によってはじめてサウレスポンプが誘起される現象を実験で確認した。これは固体物質で長年追求されてきたトポロジカルアンダーソン絶縁体の「空間＋時間の1+1次元系」における現象であり，トポロジーと乱れに関する新分野の開拓である。また冷却原子の量子計量テンソルの測定にも成功した。
放射光ARPES実験に関して HfSiSやZrSiS等，非共型な空間群に属するディラック線ノード半金属のスピンテクスチャの直接的観測を行った。また層状反磁性体MnBi2Te4の表面状態を観測し，反強磁性トポロジカル絶縁体であることを実証した。また銅酸化物高温超伝導体の終端面に依存する電子状態の観測に成功し，今後の表面のアンドレーエフ束縛状態やトポロジカル表面状態の観測につながる成果を得た。
マイクロ波領域カイラルフォトニック結晶においてエッジ状態やWeyl点近傍での特異な電磁波の振る舞いを観測した。２次元フォトニック結晶におけるコーナー状態の観測にはじめて成功した。さらに、ライトラインより低周波数領域においてヘリカルエッジ状態を有する新たなトポロジカルフォトニック結晶構造を見出し、低損失光導波路への応用可能性を示した。

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

理論的研究に関して，2011年に代表等が理論的に発案していた量子化ベリー位相が近年発見された高次トポロジカル相におけるバルクの不変量であることが確立し，広く用いられるようになった。また，強相関電子系における高次トポロジカルモット絶縁体の新概念を世界に先駈けて提案し，独自の量子化ベリー位相を用いてバルク・エッジ（コーナー）対応を確立することができた。
冷却原子に関して，乱れ誘起サウレスポンプの観測、光格子および光トラップ中での冷却原子の量子計量テンソルの測定、など当初の目標を超える研究の進展があった。
放射光ARPES実験に関して，MnBi2Te4が反強磁性トポロジカル絶縁体であることを世界で初めて実証した。（本成果は，Natureに12月に掲載され，プレス発表を行ったところ日経産業新聞に研究成果に関する記事が掲載された（2020年1月21日６面）。）
ナノフォトニクスのプラットフォームにおけるコーナー状態の観測を世界に先駆けて報告したほか、想定外の成果として新たな２次元トポロジカルフォトニック結晶構造を見出すことができた。
以上の具体的な進展をもって，当初予定より進展していると自己評価する。

Strategy for Future Research Activity

トポロジカル相の研究を実験的に観測可能な問題へ還元することで，バルクエッジ対応が適用可能な現象を広く探索し概念を深化させ，バルクエッジ対応の普遍性の確立を目指す。より多様な量子/古典で，広義のエッジ状態を開拓し独自の理論で解析する。また，平坦バンドやディラック分散，電子相関，非エルミート系など未開拓な問での新しい展開も目指す。
冷却原子に関しては、乱れ誘起サウレスポンプの定量的な理解を進め，トポロジカル超流動では，巨大質量比の原子混合系による実験を進める。サイト分解可能な量子多体系ではスピン分解型の量子気体顕微鏡の開発を原子の内部自由度を利用する。さらに、光格子中の原子の量子計量テンソルの測定についても実験と理論の定量的な比較を行う。
放射光ARPES実験に関して，非共型な空間群に属する希土類化合物を主に，高輝度放射光やレーザー光を励起光源とした角度分解光電子分光や３次元スピン角度分解光電子分光装置を用い，バルクのディラックコーンやディラック線ノードに加え，表面バンド構造や特異な３次元スピン構造の直接観測を行なう。またバルク強磁性体におけるワイル点や，それらをつなぐエッジ状態を観測し，バルクエッジ対応を確立する。更に超伝導体表面のアンドレーエフ束縛状態やトポロジカル表面状態の観測も継続し奇周波数クーパー対形成や関連するバルクエッジ対応についての理解を深化させる。
フォトニック結晶実験に関してはマイクロ波帯で機能するカイラルフォトニック結晶に関する実験を継続し、バレーフォトニック結晶導波路とその光集積回路素子への応用を目指した研究を進める。また、バレーフォトニック結晶を用いた共振器構造など検討し、そのアクティブ光素子への応用可能性を検討する。さらに、理論グループとの定期的議論を継続し、フォトニック結晶におけるバルクエッジ対応を基礎とした新たな展開も探求する。

Research Products

• [Int'l Joint Research] ドノスティア国際物理学研究所 (DIPC)(スペイン)
  • Country Name: SPAIN
  • Counterpart Institution: ドノスティア国際物理学研究所 (DIPC)
• [Int'l Joint Research] サンクトペテルブルグ大学/ノヴォシビルスク半導体物理研究所/トムスク大学(ロシア連邦)
  • Country Name: RUSSIA FEDERATION
  • Counterpart Institution: サンクトペテルブルグ大学/ノヴォシビルスク半導体物理研究所/トムスク大学
• [Int'l Joint Research] ザグレブ大学(クロアチア)
  • Country Name: CROATIA
  • Counterpart Institution: ザグレブ大学
• [Int'l Joint Research] フィリップ大学マールブルグ(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: フィリップ大学マールブルグ
• [Int'l Joint Research] 中国科学院上海マイクロシステム情報通信技術研究所(SIMIT)(中国)
  • Country Name: CHINA
  • Counterpart Institution: 中国科学院上海マイクロシステム情報通信技術研究所(SIMIT)
• [Journal Article] Robust zero modes in disordered two-dimensional honeycomb lattice with Kekule bond ordering (2021)
  • Author(s): T. Kawarabayashi, Y. Inoue, R. Itagaki, Y. Hatsugai, H. Aoki
  • Journal Title: Annals of Physics Volume: 435 Pages: 168440(1-10)
  • DOI: 10.1016/j.aop.2021.168440
  • Peer Reviewed
• [Journal Article] Revisiting Flat bands and localization (2021)
  • Author(s): Y. Hatsugai
  • Journal Title: Annals of Physics Volume: 435 Pages: 168453 (1-10)
  • DOI: 10.1016/j.aop.2021.168453
  • Peer Reviewed
• [Journal Article] Bulk-edge correspondence of classical diffusion phenomena (2021)
  • Author(s): T. Yoshida and Y. Hatsugai
  • Journal Title: Sci Rep Volume: 11 Pages: 888 (1-7)
  • DOI: 10.1038/s41598-020-80180-w
  • Peer Reviewed / Open Access
• [Journal Article] Square-root topological semimetals (2021)
  • Author(s): T. Mizoguchi, T. Yoshida and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 103 Pages: 045136 (1-8)
  • DOI: 10.1103/PhysRevB.103.045136
  • Peer Reviewed
• [Journal Article] Detecting Bulk Topology of Quadrupolar Phase from Quench Dynamics (2021)
  • Author(s): T. Mizoguchi, Y. Kuno and Y. Hatsugai
  • Journal Title: Physical Review Letters Volume: 126 Pages: 016802 (1-6)
  • DOI: 10.1103/PhysRevLett.126.016802
  • Peer Reviewed
• [Journal Article] Machine Learning of Mirror Skin Effects in the Presence of Disorder (2021)
  • Author(s): Hiromu Araki, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Journal Title: J. Phys. Soc. Jpn Volume: 90 Pages: 053703 1-5
  • DOI: 10.7566/JPSJ.90.053703
  • Peer Reviewed
• [Journal Article] Adiabatic heuristic principle on a torus and generalized Streda formula (2020)
  • Author(s): K. Kudo and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 102 Pages: 125108 (1-6)
  • DOI: 10.1103/PhysRevB.102.125108
  • Peer Reviewed
• [Journal Article] Interaction-induced topological charge pump (2020)
  • Author(s): Y. Kuno and Y. Hatsugai
  • Journal Title: Physical Review Research Volume: 2 Pages: 042024R (1-5)
  • DOI: 10.1103/PhysRevResearch.2.042024
  • Peer Reviewed / Open Access
• [Journal Article] Flat band quantum scar (2020)
  • Author(s): Y. Kuno, T. Mizoguchi and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 102 Pages: 241115 (1-5)
  • DOI: 10.1103/PhysRevB.102.241115
  • Peer Reviewed
• [Journal Article] Interaction-induced doublons and embedded topological subspace in a complete flat-band system (2020)
  • Author(s): Y. Kuno, T. Mizoguchi and Y. Hatsugai
  • Journal Title: Physical Review A Volume: 102 Pages: 63325 (1-10)
  • DOI: 10.1103/PhysRevA.102.063325
  • Peer Reviewed
• [Journal Article] Systematic construction of topological flat-band models by molecular-orbital representation (2020)
  • Author(s): T. Mizoguchi and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 101 Pages: 235125 (1-5)
  • DOI: 10.1103/PhysRevB.101.235125
  • Peer Reviewed
• [Journal Article] Type-III Dirac Cones from Degenerate Directionally Flat Bands: Viewpoint from Molecular-Orbital Representation (2020)
  • Author(s): T. Mizoguchi and Y. Hatsugai
  • Journal Title: Journal of the Physical Society of Japan Volume: 89 Pages: 103704 (1-5)
  • DOI: 10.7566/jpsj.89.103704
  • Peer Reviewed
• [Journal Article] Square-root higher-order topological insulator on a decorated honeycomb lattice (2020)
  • Author(s): T. Mizoguchi, Y. Kuno and Y. Hatsugai
  • Journal Title: Physical Review A Volume: 102 Pages: 33527 (1-7)
  • DOI: 10.1103/PhysRevA.102.033527
  • Peer Reviewed
• [Journal Article] Fate of fractional quantum Hall states in open quantum systems: Characterization of correlated topological states for the full Liouvillian (2020)
  • Author(s): T. Yoshida, K. Kudo, H. Katsura and Y. Hatsugai
  • Journal Title: Physical Review Research Volume: 2 Pages: 33428 (1-16)
  • DOI: 10.1103/PhysRevResearch.2.033428
  • Peer Reviewed / Open Access
• [Journal Article] Mirror skin effect and its electric circuit simulation (2020)
  • Author(s): T. Yoshida, T. Mizoguchi and Y. Hatsugai
  • Journal Title: Physical Review Research Volume: 2 Pages: 022062 (1-6)
  • DOI: 10.1103/PhysRevResearch.2.022062
  • Peer Reviewed / Open Access
• [Journal Article] Exceptional band touching for strongly correlated systems in equilibrium (2020)
  • Author(s): T. Yoshida, R. Peters, N. Kawakami and Y. Hatsugai
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 12 Pages: 12A109 (1-30)
  • DOI: 10.1093/ptep/ptaa059
  • Peer Reviewed / Open Access
• [Journal Article] Schemes for nondestructive quantum gas microscopy of single atoms in an optical lattice (2020)
  • Author(s): D. Okuno, Y. Amano, K. Enomoto, N. Takei and Y. Takahashi,_
  • Journal Title: New Journal of Physics Volume: 22 Pages: 013041-1-9
  • DOI: 10.1088/1367-2630/ab6af9
  • Peer Reviewed / Open Access
• [Journal Article] Boundary-obstructed topological phases of a massive Dirac fermion in a magnetic field (2020)
  • Author(s): K. Asaga and T. Fukui
  • Journal Title: Phys. Rev. B Volume: 102 Pages: 155102 1-11
  • DOI: 10.1103/PhysRevB.102.155102
  • Peer Reviewed
• [Journal Article] Theory of edge states based on the Hermiticity of tight-binding Hamiltonian operators (2020)
  • Author(s): T. Fukui
  • Journal Title: Phys. Rev. Research Volume: 2 Pages: 043136 1-22
  • DOI: 10.1103/PhysRevResearch.2.043136
  • Peer Reviewed / Open Access
• [Journal Article] ZQ Berry phase for higher-order symmetry-protected topological phases (2020)
  • Author(s): H. Araki, T. Mizoguchi, and Y. Hatsugai
  • Journal Title: Physical Review Research Volume: 2 Pages: 012009(R)-1-5
  • DOI: 10.1103/PhysRevResearch.2.012009
  • Peer Reviewed / Open Access
• [Journal Article] Oriented propagation of magnetization due to chiral edge modes in Kitaev-type models (2020)
  • Author(s): T. Mizoguchi, T. Koma, and Y. Yoshida
  • Journal Title: Physical Review B Volume: 101 Pages: 014442-1-14
  • DOI: 10.1103/PhysRevB.101.014442
  • Peer Reviewed
• [Journal Article] Higher-order topological phases in a spring-mass model on a breathing kagome lattice (2020)
  • Author(s): H. Wakao, T. Yoshida, H. Araki, T. Mizoguchi, and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 101 Pages: 094107-1-9
  • DOI: 10.7566/JPSJ.89.083702
  • Peer Reviewed
• [Journal Article] Topological Modes Protected by Chiral and Two-Fold Rotational Symmetry in a Spring-Mass Model with a Lieb Lattice Structure (2020)
  • Author(s): H. Wakao, T. Yoshida, T. Mizoguchi, and Y. Hatsugai
  • Journal Title: Journal of the Physical Society of Japan Volume: 89 Pages: 083702-1-4
  • DOI: 10.1103/PhysRevB.101.094107
  • Peer Reviewed
• [Journal Article] Spatial adiabatic passage of massive quantum particles in an optical Lieb lattice (2020)
  • Author(s): S. Taie, T. Ichinose, H. Ozawa and Y. Takahashi
  • Journal Title: Nature Communications Volume: 11 Pages: 257-1-6
  • DOI: 10.1038/s41467-019-14165-3
  • Peer Reviewed / Open Access
• [Journal Article] Manipulation of saturation magnetization and perpendicular magnetic anisotropy in epitaxial CoxMn4-xN films with ferrimagnetic compensation (2020)
  • Author(s): Keita Ito, Yoko Yasutomi, Siyuan Zhu, Munisa Nurmamat, Yukiharu Takeda, Yuji Saitoh, Kaoru Toko, Ryota Akiyama, Akio Kimura, Takashi Suemasu
  • Journal Title: Phys. Rev. B Volume: 101 Pages: 104401 (1-8)
  • DOI: 10.1103/PhysRevB.101.104401
  • Peer Reviewed
• [Journal Article] Response of bulk and topological states to the antiferromagnetic transition in MnBi2Te4 (2020)
  • Author(s): D. A. Estyunin, I. I. Klimovskikh, A. M. Shikin, E. F. Schwier, M. M. Otrokov, A. Kimura, S. Kumar, S. O. Filnov, Z. S. Aliev, M. B. Babanly, E. V. Chulkov
  • Journal Title: APL Materials Volume: 8 Pages: 021105 (1-7)
  • DOI: 10.1063/1.5142846
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spectroscopic evidence of quasi-one-dimensional metallic Rashba spin split bands on Si(111)5x2- Au surface (2020)
  • Author(s): Kazuaki Taguchi, Kazuki Sumida, Yuki Okuda, Koji Miyamoto, Akio Kimura, Tamio Oguchi, Taichi Okuda
  • Journal Title: Phys. Rev. B Volume: 101 Pages: 045430 (1-8)
  • DOI: 10.1103/PhysRevB.101.045430
  • Peer Reviewed
• [Journal Article] Active topological photonics (2020)
  • Author(s): Y. Ota, K. Takaka, T. Ozawa, A. Amo, Z. Jia, B. Kante, M. Notomi, Y. Arakawa, and S. Iwamoto
  • Journal Title: Nanophotonics Volume: 9 Pages: 547-567
  • DOI: 10.1515/nanoph-2019-0376
  • Peer Reviewed
• [Journal Article] So Small Implies So Large: For a Material Design (2019)
  • Author(s): Y. Hatsugai
  • Journal Title: JPSJ News and Comments Volume: 16 Pages: 13-13
  • DOI: 10.7566/JPSJNC.16.13
  • Open Access
• [Journal Article] Higher-Order Topological Mott Insulators (2019)
  • Author(s): K. Kudo, T. Yoshida and Y. Hatsugai
  • Journal Title: Physical Review Letters Volume: 123 Pages: 196402-1-6
  • DOI: 10.1103/PhysRevLett.123.196402
  • Peer Reviewed
• [Journal Article] Sequential quantum phase transitions in J1-J2 Heisenberg chains with integer spins (S > 1): Quantized Berry phase and valence-bond solids (2019)
  • Author(s): S. Fubasami, T. Mizoguchi, and Y. Hatsugai
  • Journal Title: Physical Review B Volume: 100 Pages: 014438-1-7
  • DOI: 10.1103/PhysRevB.100.014438
  • Peer Reviewed
• [Journal Article] Molecular-orbital representation of generic flat-band models (2019)
  • Author(s): T. Mizoguchi and Y. Hatsugai
  • Journal Title: Europhysics Letters Volume: 127 Pages: 47001-1-6
  • DOI: 10.1209/0295-5075/127/47001
  • Peer Reviewed
• [Journal Article] Higher-Order Topological Phase in a Honeycomb-Lattice Model with Anti-Kekule Distortion (2019)
  • Author(s): T. Mizoguchi, H. Araki, and Y. Hatsugai
  • Journal Title: Journal of the Physical Society of Japan Volume: 88 Pages: 104703-1-7
  • DOI: 10.7566/JPSJ.88.104703
  • Peer Reviewed
• [Journal Article] Trimer classical spin liquid from interacting fractional charges (2019)
  • Author(s): K. Tokushuku, T. Mizoguchi, and M. Udagawa
  • Journal Title: Physical Review B Volume: 100 Pages: 134415-1-13
  • DOI: 10.1103/PhysRevB.100.134415
  • Peer Reviewed
• [Journal Article] Flat bands and higher-order topology in polymerized triptycene: Tight-binding analysis on decorated star lattices (2019)
  • Author(s): T. Mizoguchi, M. Maruyama, S. Okada, and Y. Hatsugai
  • Journal Title: Physical Review Materials Volume: 3 Pages: 114201-1-12
  • DOI: 10.1103/PhysRevMaterials.3.114201
  • Peer Reviewed
• [Journal Article] Nonsymmorphic-Symmetry-Protected Topological Magnons in Three-Dimensional Kitaev Materials (2019)
  • Author(s): W. Choi, T. Mizoguchi, and Y. B. Kim
  • Journal Title: Physical Review Letters Volume: 123 Pages: 227202-1-6
  • DOI: 10.1103/PhysRevLett.123.227202
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Symmetry-protected exceptional rings in two-dimensional correlated systems with chiral symmetry (2019)
  • Author(s): Tsuneya Yoshida, Robert Peters, Norio Kawakami and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 121101 1-5
  • DOI: 10.1103/PhysRevB.99.121101
  • Peer Reviewed
• [Journal Article] Efficient method to compute Z4 indices with glide symmetry and applications to the Mobius materials CeNiSn and UCoGe (2019)
  • Author(s): Tsuneya Yoshida, Akito Daido, Norio Kawakami and Youichi Yanase
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 235105 1-18
  • DOI: 10.1103/PhysRevB.99.235105
  • Peer Reviewed
• [Journal Article] Exceptional rings protected by emergent symmetry for mechanical systems (2019)
  • Author(s): Tsuneya Yoshida and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 054109 1-16
  • DOI: 10.1103/PhysRevB.100.054109
  • Peer Reviewed
• [Journal Article] Non-Hermitian fractional quantum Hall states (2019)
  • Author(s): Tsuneya Yoshida, Koji Kudo and Yasuhiro Hatsugai
  • Journal Title: Scientific Reports Volume: 9 Pages: 16895 1-8
  • DOI: 10.1038/s41598-019-53253-8
  • Peer Reviewed / Open Access
• [Journal Article] Weakly bound molecules as sensors of new gravitylike forces (2019)
  • Author(s): M. Borkowski, A. A. Buchachenko, R. Ciurylo, P. S. Julienne, H. Yamada, Y. Kikuchi, Y. Takasu and Y. Takahashi
  • Journal Title: Scientific Reports Volume: 9 Pages: 14807-1-7
  • DOI: 10.1038/s41598-019-51346-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm (2019)
  • Author(s): Y. Takata, S. Nakajima, J. Kobayashi, K. Ono, Y. Amano, and Y. Takahashi,
  • Journal Title: Review of Scientific Instruments Volume: 90 Pages: 083001-083005
  • DOI: 10.1063/1.5110037
  • Peer Reviewed
• [Journal Article] トポロジカル絶縁体の光駆動ディラック電流の観測-光周波数スピントロニクスに向けて- (2019)
  • Author(s): 木村昭夫
  • Journal Title: 応用物理 Volume: 88 Pages: 445-451
  • DOI: 10.11470/oubutsu.88.7_445
• [Journal Article] Prediction and observation of an antiferromagnetic topological insulator (2019)
  • Author(s): M. M. Otrokov, I. I. Klimovskikh, H. Bentmann, D. Estyunin, Z. S. Aliev, A. M. Shikin, E. F. Schwier, S. Kumar, A. Kimura, E. V. Chulkov, 他34名
  • Journal Title: Nature Volume: 576 Pages: 416-422
  • DOI: 10.1038/s41586-019-1840-9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Disentangling orbital and spin textures of surface-derived states in non-symmorphic semimetal HfSiS (2019)
  • Author(s): Xiaoxiao Wang, Jiahua Chen, Mingtian Zheng, Tatiana V. Menshchikova, Igor P. Rusinov, Eike F. Schwier, Filip Orbanic, Shilong Wu, Kazuki Sumida, Tomoki Yoshikawa, Koji Miyamoto, Munisa Nurmamat, Taichi Okuda, Kenya Shimada, Mario Novak, Evgueni V. Chulkov, Akio Kimura
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 205140 (1-7)
  • DOI: 10.1103/PhysRevB.100.205140
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Bidirectional surface photovoltage on a topological insulator (2019)
  • Author(s): T. Yoshikawa, K. Sumida, Y. Ishida, J. Chen, M. Nurmamat, K. A. Kokh, O. E. Tereshchenko, S. Shin, A. Kimura
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 165311 (1-6)
  • DOI: 10.1103/PhysRevB.100.165311
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Element-specific density of states of Co2MnGe revealed by resonant photoelectron spectroscopy (2019)
  • Author(s): Takashi Kono, Masaaki Kakoki, Tomoki Yoshikawa, Xiaoxiao Wang, Kazuki Sumida, Koji Miyamoto, Takayuki Muro, Yukiharu Takeda, Yuji Saitoh, Kazuki Goto, Yuya Sakuraba, Kazuhiro Hono, Akio Kimura
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 165120 (1-6)
  • DOI: 10.1103/PhysRevB.100.165120
  • Peer Reviewed
• [Journal Article] Magnetic-impurity-induced modifications to ultrafast carrier dynamics in the ferromagnetic topological insulators Sb2-xVxTe3 (2019)
  • Author(s): K. Sumida, M. Kakoki, J. Reimann, M. Nurmamat, S. Goto, Y. Takeda, Y. Saitoh, K. A. Kokh, O. E. Tereshchenko, J Guedde, U Hoefer, A. Kimura
  • Journal Title: New J. Phys. Volume: 21 Pages: 093006 (1-8)
  • DOI: 10.1088/1367-2630/ab3ac6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Highly anisotropic interlayer magnetoresitance in ZrSiS nodal-line Dirac semimetal (2019)
  • Author(s): M. Novak, S. N. Zhang, F. Orbanic, N. Biliskov, G. Eguchi, A. Kimura, X. X. Wang, T. Osada, K. Uchida, M. Sato, O. V. Yazyev, Q. S. Wu, I. Kokanovic
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 085137 (1-7)
  • DOI: 10.1103/PhysRevB.100.085137
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Negative Te spin polarization responsible for ferromagnetic order in the doped topological insulator V0.04(Sb1-xBix)1.96Te3 (2019)
  • Author(s): M. Ye, T. Xu, G. Li, S. Qiao, Y. Takeda, Y. Saitoh, S.-Y. Zhu, M. Nurmamat, K. Sumida, Y. Ishida, S. Shin, A. Kimura
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 144413 (1-7)
  • DOI: 10.1103/PhysRevB.99.144413
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Buried double CuO chains in YBa2Cu4O8 uncovered by nano-ARPES (2019)
  • Author(s): Hideaki Iwasawa, Pavel Dudin, Kyosuke Inui Takahiko Masui Timur K. Kim, Cephise Cacho, Moritz Hoesch
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 140510 (1-6)
  • DOI: 10.1103/PhysRevB.99.140510
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Valley anisotropy in elastic metamaterials (2019)
  • Author(s): S. Li, I. Kim, S. Iwamoto, J. Zang, and J. Yang
  • Journal Title: Phys. Rev. B Volume: 100 Pages: 195102
  • DOI: 10.1103/PhysRevB.100.195102
  • Peer Reviewed
• [Journal Article] Spin-dependent directional emission from a quantum dot ensemble embedded in an asymmetric waveguide (2019)
  • Author(s): W. Lin, Y. Ota, S. Iwamoto, and Y. Arakawa
  • Journal Title: Opt. Lett. Volume: 44 Pages: ツ?3749-3752
  • DOI: 10.1364/OL.44.003749
  • Peer Reviewed
• [Journal Article] Photonic crystal nanocavity based on a topological corner state (2019)
  • Author(s): Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto
  • Journal Title: Optica Volume: 6 Pages: 786-789
  • DOI: 10.1364/OPTICA.6.000786
  • Peer Reviewed
• [Journal Article] GaAs valley photonic crystal waveguide with light-emitting InAs quantum dots (2019)
  • Author(s): T. Yamaguchi, Y. Ota, R. Katsumi, K. Watanabe, S. Ishida, A. Osada, Y Arakawa and S. Iwamoto
  • Journal Title: Appl. Phys. Express Volume: 12 Pages: ツ?62005
  • DOI: 10.7567/1882-0786/ab1cc5
  • Peer Reviewed
• [Presentation] Generalized Streda formula in the adiabatic heuristic principle (2021)
  • Author(s): Koji Kudo and Yasuhiro Hatsugai
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research
• [Presentation] Construction of Flat band Quantum Scars (2021)
  • Author(s): Yoshihito Kuno, Tomonari Mizoguchi and Yasuhiro Hatsugai
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research
• [Presentation] Square-root higher-order topological insulators and topological semimetals (2021)
  • Author(s): T. Mizoguchi, Y. Kuno, T. Yoshida, and Y. Hatsugai
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research
• [Presentation] 拡散現象におけるバルク-エッジ対応 (2021)
  • Author(s): 吉田恒也、初貝安弘
  • Organizer: 日本物理学会 第76回年次大会(2021年)
• [Presentation] 磁場中の3次元ディラック・フェルミオンのコーナー状態 (2021)
  • Author(s): 浅賀孝一、福井隆裕
  • Organizer: 日本物理学会 第76回年次大会
• [Presentation] 一様磁場中の3次トポロジカル絶縁体 (2021)
  • Author(s): 大滝友里亜、福井隆裕
  • Organizer: 日本物理学会 第76回年次大会
• [Presentation] Adiabatic heuristic principle on a torus and anyon pumping (2021)
  • Author(s): 工藤耕司
  • Organizer: 科研費基盤研究S (17H06138)Extended 8-th Informal Meeting with invited speakers_
  • Invited
• [Presentation] エニオンポンプのバルクエッジ対応 (2021)
  • Author(s): 工藤耕司、久野義人、初貝安弘
  • Organizer: 日本物理学会第76回年次大会(2021年)
• [Presentation] 平坦バンドから構成する量子多体傷跡 (2021)
  • Author(s): 久野義人、溝口知成、初貝安弘
  • Organizer: 日本物理学会 第76回年次大会(2021年)
• [Presentation] 高次トポロジカル絶縁体の物理 (2021)
  • Author(s): 溝口知成
  • Organizer: 新学術領域「次世代物質探索のための離散幾何学」基礎講義
  • Invited
• [Presentation] トポロジカル相における量子化ベリー位相 (2021)
  • Author(s): 溝口知成
  • Organizer: CREST 「物質のトポロジカル相の理論的探究」チュートリアルワークショップ
  • Invited
• [Presentation] 第III種ディラック粒子を有する格子模型の構成法 (2021)
  • Author(s): 溝口知成、初貝安弘
  • Organizer: 日本物理学会 第７６回年次大会
• [Presentation] Dynamics induced by symmetry-protected exceptional rings for mechanical graphene (2021)
  • Author(s): 南島元、吉田恒也、初貝安弘
  • Organizer: 日本物理学会 第76回年次大会(2021年)
• [Presentation] Fluctuating active nematicsでのダイマー構造 (2021)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Yasuhiro Hatsugai
  • Organizer: 日本物理学会 第76回年次大会(2021年)
• [Presentation] Chiral edge modes of coupled rock-paper-scissors cycles (2021)
  • Author(s): Tsuneya Yoshida
  • Organizer: 2021 Informal meeting : Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts2021
  • Invited
• [Presentation] Non-Hermitian fractional quantum Hall states in open quantum systems (2021)
  • Author(s): Tsuneya Yoshida, Koji Kudo, Hosho Katsura, and Yasuhiro Hatsugai
  • Organizer: APS march meeting 2021
  • Int'l Joint Research
• [Presentation] 非エルミート系におけるトポロジカル物性 (2021)
  • Author(s): 吉田恒也
  • Organizer: 新学術基礎講義(次世代物質探索のための離散幾何学)
  • Invited
• [Presentation] 量子開放系での分数量子ホール状態の特徴付け (2020)
  • Author(s): 吉田恒也、工藤耕司、桂法相、初貝安弘
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Robust zero modes in disordered fermion-vortex systems (2020)
  • Author(s): Tohru Kawarabayashi
  • Organizer: Localisation 2020
  • Int'l Joint Research / Invited
• [Presentation] 変形されたSu-Schrieffer-Heeger模型のトポロジカルな性質 (2020)
  • Author(s): 河原林透、初貝安弘
  • Organizer: 日本物理学会２０２０年秋季大会
• [Presentation] 格子ハミルトニアンのエルミート性に基づいたエッジ状態の理論 (2020)
  • Author(s): 福井隆裕
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Welcome: Towards Science of Bulk-Edge Correspondence (2020)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts"[ BE/BC2020F (Bulk-Edge/Boundary Correspondence)
  • Int'l Joint Research / Invited
• [Presentation] Revisiting flat bands and localization (2020)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: localisation 2020
  • Int'l Joint Research / Invited
• [Presentation] Topological invariants of the bulk and edge-of-edge states of higher order topological insulators (2020)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: トポロジカル表面状態,ソリトンとブレーン,指数定理
  • Invited
• [Presentation] 乱れにより誘起されるサウレス量子ポンプ (2020)
  • Author(s): 中島 秀太, 武井 宣幸, 佐久間 啓太, 久野 義人, 高橋 義朗
  • Organizer: 日本物理学会第75回年次大会(2020)
• [Presentation] 散逸フェルミハバードモデルにおける負温度量子磁性の実現 (2020)
  • Author(s): 高須 洋介, 西澤 直樹, 田家 慎太郎, 久野 義人, 高橋 義朗
  • Organizer: 日本物理学会第75回年次大会(2020)
• [Presentation] プラケット型光格子におけるSU(4)一重項の実現 (2020)
  • Author(s): 西澤 直樹, 田家 慎太郎, 高須 洋介, 久野 義人, 高橋 義朗
  • Organizer: 日本物理学会第75回年次大会(2020)
• [Presentation] 巨大質量比の量子気体混合系で探る普遍的現象 (2020)
  • Author(s): 高橋 義朗
  • Organizer: 日本物理学会第75回年次大会(2020)
  • Invited
• [Presentation] Disorder-Induced Thouless Pumping of Ultracold Atoms in an Optical Lattice (2020)
  • Author(s): N. Takei
  • Organizer: Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts"[ BE/BC2020F (Bulk-Edge/Boundary Correspondence)
  • Int'l Joint Research / Invited
• [Presentation] Experiments with large mass-imbalance ultracold atom mixtures (2020)
  • Author(s): F. Schafer, N. Mizukami, P. Yu, S. Koibuchi, A. Bouscal, and Y. Takahashi
  • Organizer: International symposium on Clustering as a Window on the Hierarchical Structure of Quantum Systems (CLUSHIQ2020)
  • Int'l Joint Research / Invited
• [Presentation] Observation of Weyl Cones in Ferromagnetic Heusler Alloy Films Co2MnGa by Spin- and Angle- Resolved Photoemission Spectroscopy (2020)
  • Author(s): Kazuki Sumida, Yuya Sakuraba, Keisuke Masuda, Takashi Kono, Masaaki Kakoki, Kazuki Goto, Koji Miyamoto, Yoshio Miura, Taichi Okuda, Akio Kimura
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 反強磁性トポロジカル絶縁体MnBi2Te4の角度分解光電子分光 (2020)
  • Author(s): 木村昭夫, Mikhail Otrokov, Ilya Klimovskikh, Dmitry Estyunin, Alexander Shikin, Eike Schwier, Shiv Kumar, Evgueni Chulkov
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] 軟X線ARPESによるホイスラー型Co2MnGeのハーフメタリックなバンド構造の観測 (2020)
  • Author(s): 河野嵩, 鹿子木将明, 吉川智己, Xiaoxiao Wang, 後藤一希, 室隆桂之, 梅津理恵, 木村昭夫
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] 銅酸化物高温超伝導体La(2-x)SrxCuO4の高分解能ARPES (2020)
  • Author(s): 尾田拓之慎, 岩澤英明, 小澤秀介, 矢野力三, 柏谷聡, 笹川崇男, E. F. Schwier, 島田賢也, 木村昭夫
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] Si置換した層状リン化カルコゲナイド超伝導体Zr(P1-x, Six)Seの硬X線光電子分光 (2020)
  • Author(s): 石坂仁志, 田北仁志, 久保拓也, 宮下剛夫, Wumiti Mansuer, 木村昭夫, 島田賢也, 上田茂典, 鬼頭聖, 石田茂之, 岡邦彦, 後藤義人, 藤 久裕司, 吉田良行, 伊豫彰, 荻野拓, 永崎洋, 川島健司, 柳陽介, 井野明洋
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] Eu系アクシオン絶縁体候補物質のARPES (2020)
  • Author(s): 白石海人, Mario Novak, 吉川智己, 河野嵩, Shiv Kumar, Eike F. Schwier, 島田賢也, Sergey V. Eremeev, 木村昭夫
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] TlBiS2およびTlBiSe2における温度誘起トポロジカル相転移の光電子分光による研究 (2020)
  • Author(s): 今井健人, 加藤和貴, 松田旭央, Jiahua Chen, 宮本幸治, 木村昭夫, 奥田太一
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] Investigation on a single-mode array laser based on a topological edge state (2020)
  • Author(s): N. Ishida, Y. Ota, W. Lin, Y. Arakawa, and S. Iwamoto
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts“, P 16, Tokyo, Japan, February (2020).
  • Int'l Joint Research
• [Presentation] Light Propagation in Semiconductor Valley Photonic Crystals (2020)
  • Author(s): S. Iwamoto
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts“, Tokyo, Japan, February (2020).
  • Int'l Joint Research / Invited
• [Presentation] Topological waveguides and nanoacvities using semiconductor photonic crystals (2020)
  • Author(s): S. Iwamoto, Y. Ota, T. Yamaguchi, H. Yoshimi, and Y. Arakawa
  • Organizer: SPIE Photonics West 2020, Paper 11274-46, The Moscone Center, San Francisco, USA, February (2020).
  • Int'l Joint Research / Invited
• [Presentation] Semiconductor-based topological photonics (2020)
  • Author(s): S. Iwamoto
  • Organizer: The 1st SNU-UT Workshop on Nanophotonics, Seoul National University, Seoul, Korea, January (2020)
  • Int'l Joint Research
• [Presentation] Topologically-protected valley kink state in a slab-type photonic crystal waveguide (2020)
  • Author(s): T. Yamaguchi
  • Organizer: SThe 1st SNU-UT Workshop on Nanophotonics, Seoul National University, Seoul, Korea, January (2020)
  • Int'l Joint Research
• [Presentation] バレーフォトニック結晶におけるスローライトエッジ状態の光伝搬の観測 (2020)
  • Author(s): 吉見 拓展、山口 拓人、勝見 亮太、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第67回応用物理学会春季学術講演会, 14p-B415-8, 上智大学 ,東京(2020).
• [Presentation] ライトライン下にヘリカルエッジ状態を有する光トポロジカル絶縁体の検討 (2020)
  • Author(s): 岩本 敏、張 成昆、太田 泰友、荒川 泰彦
  • Organizer: 第67回応用物理学会春季学術講演会, 14p-B415-6, 上智大学 ,東京(2020).
• [Presentation] トポロジカルエッジ状態を用いた単一モード動作アレイレーザの検討 ～次近接共振器間結合の影響～ (2020)
  • Author(s): 石田 夏子、太田 泰友、林 文博、荒川 泰彦、岩本 敏
  • Organizer: 第67回応用物理学会春季学術講演会, 14p-B415-5, 上智大学, 東京(2020).
• [Presentation] Numerical Study of Adiabatic Heuristic for the Quantum Hall States (2020)
  • Author(s): Koji Kudo and Yasuhiro Hatsugai
  • Organizer: BE/BC2020F (Bulk-Edge/Boundary Correspondence)
  • Int'l Joint Research
• [Presentation] 分数量子ホール系におけるストレーダ公式の一般化 (2020)
  • Author(s): 工藤耕司、初貝安弘
  • Organizer: 日本物理学会2020年秋季大会
• [Presentation] トーラス上の多成分エニオンの量子ホール状態とAdiabatic heuristic (2020)
  • Author(s): 工藤耕司、初貝安弘
  • Organizer: 日本物理学会第75回年次大会 (2020年)
• [Presentation] 相互作用によって誘起されるトポロジカルチャージポンプ (2020)
  • Author(s): 久野義人、初貝安弘
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Quantized Berry Phases for Characterization of the Higher-Order Symmetry-Protected Topological Phases (2020)
  • Author(s): H. Araki, T. Mizoguchi, and Y. Hatsugai
  • Organizer: International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” BE/BC2020F
  • Int'l Joint Research
• [Presentation] Polymerized triptycene as a candidate material of higher-order topological insulator (2020)
  • Author(s): T. Mizoguchi, M. Maruyama, S. Okada, and Y. Hatsugai
  • Organizer: APS March Meeting 2020
  • Int'l Joint Research
• [Presentation] Characterization for higher-order symmetry-protected topological phases by quantized Berry phases (2020)
  • Author(s): H. Araki, T. Mizoguchi, and Y. Hatsugai
  • Organizer: APS March Meeting 2020
  • Int'l Joint Research
• [Presentation] Shastry-Sutherland模型におけるZ4Berry位相 (2020)
  • Author(s): 溝口知成、荒木広夢、初貝安弘
  • Organizer: 日本物理学会 第７５回年次大会
• [Presentation] 2次元・3次元Benalcazar-Bernevig-Hughes模型における量子化ベリー位相 (2020)
  • Author(s): 荒木広夢、溝口知成、初貝安弘
  • Organizer: 日本物理学会 第７５回年次大会
• [Presentation] 平方根トポロジカル絶縁体の高次トポロジカル絶縁体への拡張 (2020)
  • Author(s): 溝口知成、久野義人、初貝安弘
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Spring-mass模型におけるカイラル対称性に起因するトポロジカル現象 (2020)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: 日本物理学会 第75回年次大会(2020年)
• [Presentation] Chiral zero modes protected by a spatial symmetry in a spring-mass model (2020)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: Variety and university of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts [BE/BC2020F (Bulk-Edge/Boundary Correspondence)]
  • Int'l Joint Research
• [Presentation] Lieb格子のバネ質点模型におけるトポロジカルモード (2020)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] Topological band structure of classical diffusion phenomena (2020)
  • Author(s): Tsuneya Yoshida
  • Organizer: 2020 Informal meeting : Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Invited
• [Presentation] 複素値相互作用における非エルミート分数量子ホール状態 (2020)
  • Author(s): 吉田恒也、工藤耕司、初貝安弘
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] 非エルミート系における分数量子ホール状態 (2020)
  • Author(s): 吉田恒也
  • Organizer: KEKオンライン研究会「熱場の量子論とその応用」
• [Presentation] 非エルミート系における分数量子ホール状態 (2020)
  • Author(s): 吉田恒也、工藤耕司、初貝安弘
  • Organizer: 日本物理学会 第75回年次大会(2020年)
• [Presentation] Non-Hermitian fractional quantum Hall states with 1/3 filling (2020)
  • Author(s): Tsuneya Yoshida
  • Organizer: APS march meeting 2020
• [Presentation] Fractional Quantum Hall State in a Non-Hermitian System (2020)
  • Author(s): Tsuneya Yoshida
  • Organizer: Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Int'l Joint Research / Invited
• [Presentation] 非エルミート系のトポロジカルバンド縮退と分数量子ホール状態 (2020)
  • Author(s): Tsuneya Yoshida
  • Organizer: 第9回「凝縮系理論の最前線」研究会
  • Invited
• [Presentation] 対称性に保護されたエクセプショナルリング・エクセプショナルサーフェス (2020)
  • Author(s): 吉田恒也
  • Organizer: 北海道大学 量子機能工学研究室 セミナー(共催：応用物理学会北海道支部)
  • Invited
• [Presentation] 一般化されたカイラル対称性とバルク・エッジ対応 (2020)
  • Author(s): 河原林透、初貝安弘
  • Organizer: 日本物理学会第７５回年次大会
• [Presentation] Variety of bulk-edge correspondence: From quantum to classical (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Topological mechanics and fluids
  • Int'l Joint Research / Invited
• [Presentation] Bulk-edge correspondence: History and recent development (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research / Invited
• [Presentation] Aspects of bulk-edge correspondence: Mechanical systems and effects of electron-electron interaction (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Int. workshop TOPOLOGY
  • Int'l Joint Research / Invited
• [Presentation] Symmetry protected Berry phases and edge states with interaction (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Topological Phases of Interacting Quantum Systems
  • Int'l Joint Research / Invited
• [Presentation] Use of higher order topological phases and various boundary states (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: JSPS/EPSRC/CNRS Core 2 core seminar
  • Int'l Joint Research / Invited
• [Presentation] 仮想と実在をつなぐバルクエッジ対応 (2019)
  • Author(s): 初貝安弘
  • Organizer: KEK 連携コロキュウム
  • Invited
• [Presentation] 現代物理学の視点,特にトポロジカル物質とはなにか (2019)
  • Author(s): 初貝安弘
  • Organizer: 筑波大学STEAN リーダーシッププログラム課題創造学
  • Invited
• [Presentation] Quantum Simulator of SU(N) Fermi-Hubbard Model (2019)
  • Author(s): S. Taie, N. Nishizawa, Y. Takasu, Y. Takahashi
  • Organizer: EU-USA-Japan International Symposium on Quantum Technology
  • Int'l Joint Research
• [Presentation] Quantum simulation with orbital degrees of freedom in a state-dependent optical lattice (2019)
  • Author(s): K. Ono, T. Higomoto, and Y. Takahashi
  • Organizer: EU-USA-Japan International Symposium on Quantum Technology
  • Int'l Joint Research
• [Presentation] 冷却原子によるシミュレーション (2019)
  • Author(s): 中島 秀太
  • Organizer: シミュレーションによる宇宙の基本法則と進化の解明に向けて (QUCS 2019)
  • Invited
• [Presentation] Trapping of Erbium atoms for quantum degenerate Erbium-Lithium mixture experiments (2019)
  • Author(s): N. Mizukami, F. Schafer, and Y. Takahashi
  • Organizer: The 4th Kyoto- Beijing-Tokyo Workshop on Ultracold Atomic Gases
  • Int'l Joint Research
• [Presentation] Effects of disorder and interaction on topological Thouless pumping of ultracold fermions (2019)
  • Author(s): N. Takei, S. Nakajima, K. Sakuma, Y. Kuno, and Y. Takahashi
  • Organizer: The 4th Kyoto- Beijing-Tokyo Workshop on Ultracold Atomic Gases
  • Int'l Joint Research
• [Presentation] Quantum simulation using itenerant 1S0 atoms and localized 3P0 atoms in a state-dependent optical lattice (2019)
  • Author(s): Koki Ono
  • Organizer: The 4th Kyoto- Beijing-Tokyo Workshop on Ultracold Atomic Gases
  • Int'l Joint Research / Invited
• [Presentation] Quantum Magnetism of SU(N) Fermi Hubbard Model (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: SCES'19( International Conference on Strongly Correlated Electron Systems 2019
  • Int'l Joint Research / Invited
• [Presentation] Quantum Simulation with Two-electron Atoms in an Optical Lattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: Japan-Netherlands Quantum Conference
  • Int'l Joint Research / Invited
• [Presentation] 巨大質量比を有するエルビウム－リチウム原子混合量子縮退気体の生成に向けて (2019)
  • Author(s): 水上尚人, Florian Schaefer, 高橋義朗
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] 光格子中の冷却原子に対する量子計量テンソルの測定 (2019)
  • Author(s): 佐久間啓太, 武井宣幸, 高須洋介, 久野義人, 小澤知己, 高橋義朗
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] SU(N)量子気体顕微鏡の開発 (2019)
  • Author(s): 高田佳弘, 山下和也, 奥野大地, 高橋義朗
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] 光格子中における遍歴1S0原子・局在3P0原子間スピン交換ダイナミクスの観測 (2019)
  • Author(s): 小野 滉貴, 天野 良樹, 肥後本 隼也, 後藤 慎平, 段下 一平, 高橋 義朗
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] SU(N) Quantum Magnetism with Two-electron Atoms in an Optical Lattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: Bose-Einstein Condensation 2019 Frontiers in Quantum Gases
  • Int'l Joint Research / Invited
• [Presentation] Ultracold elastic and inelastic collision: probing and controlling of two-body and many-body physics (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: International Conference on Photonic, Electronic, and Atomic Collisions
  • Int'l Joint Research / Invited
• [Presentation] Developing an experimental apparatus for cold Ytterbium Rydberg atoms (2019)
  • Author(s): Nobuyuki Takei, Daichi Okuno, and Yoshiro Takahashi
  • Organizer: CATMIN(Cold ATom Molecule INteractions) Conference)
  • Int'l Joint Research
• [Presentation] 7Li-Yb mixture in mixed dimensions (2019)
  • Author(s): F. Schaefer, N. Mizukami, S. Koibuchi, P. Yu, A. Bouscal, and Y. Takahashi
  • Organizer: Workshop on Quantum Mixtures and celebration of the 70th anniversary of Sandro Stringari
  • Int'l Joint Research / Invited
• [Presentation] Topological physics explored by ultracold ytterbium atoms in an optical lattice (2019)
  • Author(s): N. Takei
  • Organizer: New Trend in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research / Invited
• [Presentation] Effects of disorder and interaction on topological Thouless pumping of ultracold fermions (2019)
  • Author(s): N. Takei, S. Nakajima, K. Sakuma, Y. Kuno, and Y. Takahashi
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Novel Phenomena of ultracold two-electron atoms in an opticallattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: Emergent Phenomena in Ultracold Atoms:Merging Topology, Interaction and Dynamics
  • Int'l Joint Research / Invited
• [Presentation] Ultracold atom study of exotic phenomena bridging different hierarchies (2019)
  • Author(s): 高橋 義朗
  • Organizer: 第二回クラスター階層領域研「第二回クラスター階層領域研究会」
• [Presentation] Quantum Simulation with Ultracold Atoms in an Optical lattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: Centre for Quantum Technologies, National University of Singapore, Singapole（CQT COLLOQUIUM2019）
  • Int'l Joint Research / Invited
• [Presentation] Quantum Simulation with Ultracold Atoms in an Optical lattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: IAS Workshop on Quantum Simulation of Novel Phenomena with Ultracold Atoms
  • Int'l Joint Research / Invited
• [Presentation] Ultracold Quantum Gas-Testing Fundamental Physics and Quantum Simulation (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: 理化学研究所Ulmer基本的対称性研究室（inauguration symposium of our Center for Time, Constants and Fundamental Symmetries）
  • Int'l Joint Research / Invited
• [Presentation] Incorporating Magnetism into Topological Materials for Innovative Functions (2019)
  • Author(s): Akio Kimura
  • Organizer: Materials Research Meeting (MRM2019)
  • Int'l Joint Research / Invited
• [Presentation] Incorporating Magnetism into 2D Materials for Innovative Functions (2019)
  • Author(s): Akio Kimura
  • Organizer: Workshop on Carrier Doping in two-dimensional layered materials: toward novel physical properties and electronic device applications (CA2D)
  • Int'l Joint Research / Invited
• [Presentation] Incorporating magnetism into 2D materials for innovative functions (2019)
  • Author(s): Akio Kimura
  • Organizer: 32nd International Microprocesses and Nanotechnology Conference (MNC2019)
  • Int'l Joint Research / Invited
• [Presentation] Direct evidence of the type-II bulk Dirac cone in transition metal dichalcogenides (2019)
  • Author(s): M. Nurmamat, T. Yoshikawa, X. X. Wang, H. Takemoto, S. Eremeev, J. H. Chen, M. Kakoki, T. Kono, T. Muro, K. Zhang, S. Kumar, E. Schwier, K. Miyamoto, T. Okuda, K. Shimada, A. Kimura
  • Organizer: The 19th International Conference on Solid Films and Surfaces (ICSFS19)
  • Int'l Joint Research
• [Presentation] Spin-orbit coupling effect on bulk and surface states of the Dirac nodal line semimetal Hf1-xZrxSiS (2019)
  • Author(s): X. X. Wang, J. H. Chen, M. T. Zheng, M. Novak, F. Orbanic, E. F. Schwier, S. L. Wu, K. Sumida, T. Yoshikawa, K. Miyamoto, M. Nurmamat, T. Okuda, K. Shimada, A. Kimura
  • Organizer: The 19th International Conference on Solid Films and Surfaces (ICSFS19)
  • Int'l Joint Research
• [Presentation] Element-specific density of states of Co2MnGe revealed by resonant photoelectron spectroscopy (2019)
  • Author(s): T. Kono, M. Kakoki, T. Yoshikawa, X. Wang, K. Sumida, K. Miyamoto, T. Muro, Y. Takeda, Y. Saitoh, K. Goto, Y. Sakuraba, K. Hono, A. Kimura
  • Organizer: The 19th International Conference on Solid Films and Surfaces (ICSFS19)
  • Int'l Joint Research
• [Presentation] Unveiling spin-dependent unoccupied electronic states of Co2MnGe (Ga) film via Ge (Ga) L2,3 absorption spectroscopy (2019)
  • Author(s): T. Yoshikawa, T. Kono, M. Kakoki, K. Sumida, K. Miyamoto, Y. Takeda,Y. Saitoh, K. Goto, Y. Sakuraba, K. Hono, A. Kimura
  • Organizer: The 19th International Conference on Solid Films and Surfaces (ICSFS19)
  • Int'l Joint Research
• [Presentation] Exchange interaction in ferromagnetic topological insulator V-doped (Sb,Bi)2Te3 (2019)
  • Author(s): Mao Ye, Tao Xu, Gang Li, Shan Qiao, Yukiharu Takeda, Yuji Saitoh, Siyuan Zhu, Munisa Nurmamat, Kazuki Sumida, Yukiaki Ishida, Shik Shin, Akio Kimura
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Observation of the magnetic and topological phase transition by ARPES in antiferromagnetic topological insulator MnBi2Te4 (2019)
  • Author(s): Dmitry A. Estyunin, I. I. Klimovskikh, A. M. Shikin, E. F. Schwier, A. Kimura, M. M. Otrokov, E. V. Chulkov
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Topologically non-trivial phase-change compound GeSb2Te4 (2019)
  • Author(s): Munisa Nurmamat, K. Okamoto, S. Y. Zhu, T. V. Menshchikova, I. P. Rusinov, Y. Ishida, K. Miyamoto, T. Okuda, T. Miyashita, X. X. Wang, K. Sumida, E. F. Schwier, M. Ye, Z. S. Aliev, M. B. Babanlyg, I. R. Amiraslanov, E. V. Chulkov, K. A. Kokh, O. E. Tereshchenko, S. Shin, Akio Kimura
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Light-sensitive surface transport in a bulk topological insulator (2019)
  • Author(s): Gaku Eguchi, M. Taupin, C. Jiahua, K. Kuroda, A. Kimura, S. Paschen
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Surface Photovoltaic effect on the (111) surface of a topological crystalline insulator (Pb,Sn)Te (2019)
  • Author(s): Hiroshi Ito, Yuta Tomohiro, Takeru Shimano, Yukiaki Ishida, Ryota Akiyama, Akio Kimura, Shik Shin, Shinji Kuroda
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Synchrotron radiation ARPES study of Dirac electron systems including rare earth elements (2019)
  • Author(s): Tomoki Yoshikawa, Yuto Kitayama, Xiaoxiao Wang, Hideaki Iwasawa, Masaaki Kakoki, Takashi Kono, Hironoshin Oda, Shusuke, Ozawa, Shiv Kumar, Eike Schwier, Kenya Shimada, Takayuki Muro, Hiroshi Tanida, Akio Kimura
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Disentangling Orbital and Spin Textures in surface-derived states in non-symorphic crystal HfSiS (2019)
  • Author(s): Xiaoxiao Wang, Jiahua Chen, Mingtian Zheng, Tatiana V. Menshchikova, Igor P. Rusinov, Eike F. Schwier, Filip Orbanic, Shilong Wu, Kazuki Sumida, Tomoki Yoshikawa, Koji Miyamoto, Munisa Nurmamat, Taichi Okuda, Kenya Shimada, Mario Novak, Evgueni Chulkov, Akio Kimura
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Magnetic Properties of IV-VI diluted magnetic semiconductor (Sn,Mn)Te thin films grown by MBE (2019)
  • Author(s): Takeru Shimano, Yuta Tomohiro, Ryo Ishikawa, Ryouta Akiyama, Yukiharu Takeda, Yuji Saitoh, Akio Kimura, Shinji Kuroda
  • Organizer: New Trends in Topological Insulators 2019 and Variety and universality of bulk-edge correspondence 2019 (NTTI 2019 and BEC 2019)
  • Int'l Joint Research
• [Presentation] Direct evidence of the bulk Dirac cone in the transition metal dichalcogenides (2019)
  • Author(s): Nurmamat Munisa, Wang Xiaoxiao, Takemoto Hiroko, Yoshikawa Tomoki, Chen Jiahua, Kakoki Masaaki, Kono Takashi, Zhang Ke, Kumar Shiv, Schwier Eike, Shimada Kenya, Miyamoto Koji, Okuda Taichi, Kimura Akio
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Disentangling Orbital and Spin Textures in Dirac Nodal-Line Semimetal HfSiS (2019)
  • Author(s): Xiaoxiao Wang, Jiahua Chen, Mingtian Zheng, Tatiana Menshchikova, Igor Rusinov, Eike Schwier, Filip Orbanic, Shilong Wu, Kazuki Sumida, Tomoki Yoshikawa, Koji Miyamoto, Munisa Nurmamat, Taichi Okuda, Kenya Shimada, Mario Novak, Evgueni Chulkov, Akio Kimura
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] 希土類元素を含むディラック電子系の放射光ARPES (2019)
  • Author(s): 吉川智己, 北山悠斗, Wang Xiaoxiao, 岩澤英明, 鹿子木将明, 河野嵩, 尾田拓之慎, 小澤秀介, Shiv Kumar, Eike Schwier, 島田賢也, 室隆桂之, 谷田博司, 木村昭夫
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] 高分解能ARPESを用いた銅酸化物高温超伝導体La(2-x)SrxCuO4の自己エネルギー解析 (2019)
  • Author(s): 尾田拓之慎, 岩澤英明, 小澤秀介, 矢野力三, 柏谷聡, 笹川崇男, E. F. Schwier, 島田賢也, 木村昭夫
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Sr2RuO4のバルク電子状態における繰り込み効果 (2019)
  • Author(s): 小澤秀介, 岩澤英明, 尾田拓之慎, 吉川智己, 木村昭夫, 室隆桂之, 吉田良行, 長谷泉, 相浦義弘
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] TlBi(S1-x-Sex)2の温度誘起トポロジカル相転移の光電子分光による研究 (2019)
  • Author(s): 今井健人, 加藤和貴, Jiahua Chen, 宮本幸治, 木村昭夫, 奥田太一
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Higher-order Poincar_ sphere beam generation via a micro ring resonator (2019)
  • Author(s): W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto
  • Organizer: International Symposium on Hybrid Quantum Systems 2019 (HQS2019), Wed-A1-4, Matsue, Shimane, Japan, December (2019)
  • Int'l Joint Research
• [Presentation] Light Trapping in a Higher-Order Topological Corner State (2019)
  • Author(s): Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto
  • Organizer: The 9th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-(ISPEC2019), P-28, Tokyo, Japan, November (2019)
  • Int'l Joint Research
• [Presentation] Integrated topological photonics using semiconductor-based photonic nanostructures (2019)
  • Author(s): S. Iwamoto
  • Organizer: The International Symposium on Plasmonics and Nanophtonics (iSPN2019), Kobe, Japan, November 2019.
  • Int'l Joint Research / Invited
• [Presentation] Semiconductor-based topological photonics (2019)
  • Author(s): S. Iwamoto
  • Organizer: Partners for International Business Workshop, Enschede, Netherlands, October 2019.
  • Int'l Joint Research / Invited
• [Presentation] Generation of Structured Light Using Spin-orbit Interaction of Light in Photonic Nanostructures (2019)
  • Author(s): S. Iwamoto
  • Organizer: Optomagnonics 2019 at Cambridge, Cambridge, UK, September 2019.
  • Int'l Joint Research / Invited
• [Presentation] Optical Skyrmionic Beam Generation Using a Micro Cavity (2019)
  • Author(s): W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto
  • Organizer: Optomagnonics 2019 at Cambridge, Cambridge, UK, September 2019.
  • Int'l Joint Research
• [Presentation] Topological photonics using semiconductor photonic crystals (2019)
  • Author(s): S. Iwamoto
  • Organizer: The 4th A3 Metamaterials Forum 2019 (A3META2019), Sapporo, Japan, August 2019.
  • Int'l Joint Research / Invited
• [Presentation] Semiconductor topological photonic crystal nanocavities (2019)
  • Author(s): S. Iwamoto
  • Organizer: International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), IP-09, Hiroshima, Japan
  • Int'l Joint Research / Invited
• [Presentation] Observation of a topological corner state in a two-dimensional photonic crystal in the optical regime (2019)
  • Author(s): Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto,
  • Organizer: International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), PP-26, Hiroshima, Japan
  • Int'l Joint Research
• [Presentation] Observation of a topological corner state in a two-dimensional photonic crystal in the optical regime (2019)
  • Author(s): Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto
  • Organizer: International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), PP-26, Hiroshima, Japan
  • Int'l Joint Research
• [Presentation] Numerical Analysis on Edge States at Zigzag and Bearded Interfaces in Valley Photonic Crystals (2019)
  • Author(s): H. Yoshimi, T. Yamaguchi, Y. Ota, Y. Arakawa, and S. Iwamoto
  • Organizer: International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), PP-27, Hiroshima, Japan
  • Int'l Joint Research
• [Presentation] Confinement of light in semiconductor using topological concept (2019)
  • Author(s): S. Iwamoto
  • Organizer: Canada-Japan Workshop on Hybrid Quantum Systems, Ottawa, Canada, June 2019.
  • Int'l Joint Research / Invited
• [Presentation] Topological Localized States in Semiconductor Photonic Crystals (2019)
  • Author(s): S. Iwamoto
  • Organizer: International Workshop TOPOLOGY, Tsukuba, Japan, June 2019
  • Int'l Joint Research / Invited
• [Presentation] Multi-band valley-protected topological edge states in GaAs-based nanophononic crystals with complete phononic bandgaps (2019)
  • Author(s): I. Kim, Z. Sun, Y. Arakawa, and S. Iwamoto
  • Organizer: Compound Semiconductor Week 2019, TuA1-8, Nara, Japan, May 2019.
  • Int'l Joint Research
• [Presentation] Numerical Investigation of Topological Edge States in a GaAs-Based Three-Dimensional Chiral Photonic Crystal (2019)
  • Author(s): S. Takahashi, S. Oono, Y. Hatsugai, Y. Arakawa, and S. Iwamoto
  • Organizer: Compound Semiconductor Week 2019, MoP-D-5, Nara, Japan, May 2019
  • Int'l Joint Research
• [Presentation] An On-chip Full Poincar_ Beam Emitter Based on an Optical Micro-ring Cavity (2019)
  • Author(s): W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto
  • Organizer: Conference on Lasers and Electro-Optics (CLEO),SW4J.4, San Jose, California, USA, May 2019.
  • Int'l Joint Research
• [Presentation] Nanocavity based on a topological corner state in a two-dimensional photonic crystal (2019)
  • Author(s): Y. Ota, R. Katsumi, K. Watanabe, F. Liu, K. Wakabayashi, S. Iwamoto, and Y. Arakawa
  • Organizer: Conference on Lasers and Electro-Optics (CLEO),SW4J.1, San Jose, California, USA, May 2019.
  • Int'l Joint Research
• [Presentation] 半導体トポロジカル集積フォトニクス (2019)
  • Author(s): 岩本敏
  • Organizer: Optics & Photonics Japan 2019, 大阪大学, 大阪 (2019).
  • Invited
• [Presentation] (基調講演）トポロジカルフォトニクス：数学と物理，工学の融合で目指すフォトニクスの新展開 (2019)
  • Author(s): 岩本 敏
  • Organizer: 第3回電子材料若手交流会研究会, つくばセミナーハウス, 守谷, 茨城 (2019)
  • Invited
• [Presentation] Siバレーフォトニック結晶Bearded界面導波路における光伝搬の観測 (2019)
  • Author(s): 吉見 拓展、山口 拓人、勝見 亮太、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第3回電子材料若手交流会研究会, Su-2-3, つくばセミナーハウス, 守谷, 茨城 (2019)
• [Presentation] 超対称性に基づいた単一モード 2 次元レーザアレイの系統的構築 (2019)
  • Author(s): 林 文博、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 20p-E207-3, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] 偶発的縮退点に基づくバレーフォトニック結晶を用いた光導波路の検討 (2019)
  • Author(s): 山口 拓人、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 21p-E205-6, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] バレーフォトニック結晶Bearded界面導波路における光伝搬の観測 (2019)
  • Author(s): 吉見 拓展、山口 拓人、勝見 亮太、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 21p-E205-3, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] 三次元カイラルフォトニック結晶の光Weyl点近傍での位相再構成現象の観測 (2019)
  • Author(s): 玉置 爽真、高橋 駿、山下 兼一、山口 拓也、上田 哲也、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 20p-E207-8, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] 単純立方格子からなる三次元フォトニック結晶における一次元状のトポロジカルエッジ状態 (2019)
  • Author(s): 高橋 駿、太田 泰友、Liu Feng、若林 克法、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 20p-E207-9, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] バレーフォトニック結晶スローライト導波路に対する高効率光カプラ (2019)
  • Author(s): 吉見 拓展、山口 拓人、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 21p-E205-4, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] トポロジカルエッジ状態を用いた大面積単一モードレーザの検討 (2019)
  • Author(s): 石田 夏子、太田 泰友、林 文博、荒川 泰彦、岩本 敏
  • Organizer: 第80回応用物理学会秋季学術講演会, 19p-PA5-10, 北海道大学, 札幌, 北海道 (2019)
• [Presentation] アクティブ材料を融合した集積トポロジカルフォトニクス (2019)
  • Author(s): 太田泰友、山口拓人、吉見拓展、勝見亮太、渡邉克之、荒川泰彦、岩本 敏
  • Organizer: 電子情報通信学会ソサイエティ大会, C3-61, 大阪大学, 豊中, 大阪 (2019)
  • Invited
• [Presentation] 二重回折格子を有するリング共振器を用いたフルポアンカレビームの生成：理論解析 (2019)
  • Author(s): 林文博、太田泰友、荒川泰彦 岩本敏
  • Organizer: 電子情報通信学会レーザ・量子エレクトロニクス研究会 ５月研究会, 琵琶湖コンファレンスセンター, 滋賀 (2019)
• [Presentation] Higher-order bulk-boundary correspondence of a topological Mott insulator (2019)
  • Author(s): Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Organizer: International Conference on Topological Materials Science 2019
  • Int'l Joint Research
• [Presentation] Mott physics of the higher-order topological insulator on the kagome lattice (2019)
  • Author(s): Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Organizer: Trends in Theory of Correlated Materials
  • Int'l Joint Research
• [Presentation] Higher-Order Topological Mott Insulator on the Kagome Lattice (2019)
  • Author(s): Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES) 2019
  • Int'l Joint Research
• [Presentation] Hubbard model on the kagome lattice and higher-order topological Mott insulators (2019)
  • Author(s): Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Organizer: New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases 2019
  • Int'l Joint Research
• [Presentation] Correlated higher-order topological insulator on kagome lattice (2019)
  • Author(s): Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
  • Organizer: International Conference on Frontiers of Correlated Electron Sciences (FCES19)
  • Int'l Joint Research
• [Presentation] Exponential precision of Chern number without integration by twisted angles (2019)
  • Author(s): Koji Kudo, Haruki Watanabe, Toshikaze Kariyado and Yasuhiro Hatsugai
  • Organizer: Synthetic Topological Matter
  • Int'l Joint Research
• [Presentation] Adiabatic Heuristicの数値的検証 (2019)
  • Author(s): 工藤耕司、初貝安弘
  • Organizer: 日本物理学会2019年秋季大会_
• [Presentation] Higher order topological phases of a disordered breathing Kagome model: A machine learning study (2019)
  • Author(s): H. Araki, T. Mizoguchi and Y. Hatsugai
  • Organizer: International Conference on Frontiers of Correlated Electron Sciences (FCES19)
  • Int'l Joint Research
• [Presentation] Higher-order topological phases of a breathing kagome model with disorders: A machine learning study (2019)
  • Author(s): H. Araki, T. Mizoguchi and Y. Hatsugai
  • Organizer: Topological and Correlated Matter Gordon Research Conference
  • Int'l Joint Research
• [Presentation] Higher-order topological phase in polymerized triptycene (2019)
  • Author(s): T. Mizoguchi, M. Maruyama, S. Okada and Y. Hatsugai
  • Organizer: New Trends in Topological Insulators 2019 & Bulk-Edge Correspondence 2019
  • Int'l Joint Research / Invited
• [Presentation] Systematic construction of topological flat-band models (2019)
  • Author(s): T. Mizoguchi and Y. Hatsugai
  • Organizer: New Trends in Topological Insulators 2019 & Bulk-Edge Correspondence 2019
  • Int'l Joint Research
• [Presentation] Z_N Berry phases for several models of higher-order topological insulators (2019)
  • Author(s): H. Araki, T. Mizoguchi, and Y. Hatsugai
  • Organizer: Les Houches Program on New Developments in Topological Condensed Matter Physics
  • Int'l Joint Research
• [Presentation] トリプチセン重合体におけるフラットバンドと高次トポロジカル相の理論 (2019)
  • Author(s): 溝口知成、丸山実那、岡田晋、初貝安弘
  • Organizer: 日本物理学会 ２０１９年秋季大会
• [Presentation] ハイパーハニカム格子をもつイリジウム酸化物における磁場誘起トポロジカルマグノンの理論 (2019)
  • Author(s): W. Choi, 溝口知成，Y. B. Kim
  • Organizer: 日本物理学会 ２０１９年秋季大会
• [Presentation] Molecular-orbital representation of topological flat-band models (2019)
  • Author(s): T. Mizoguchi and Y. Hatsugai
  • Organizer: International Conference on Strongly Correlated Electron Systems 2019 (SCES2019)
  • Int'l Joint Research
• [Presentation] Flat bands and higher-order topological phase in polymerized triptycene (2019)
  • Author(s): T. Mizoguchi
  • Organizer: Trends in Theory of Correlated Materials 2019 (TTCM2019)
  • Int'l Joint Research / Invited
• [Presentation] Kitaev模型の端状態の解析解と端磁化 (2019)
  • Author(s): 溝口知成
  • Organizer: 第12回トポロジー連携研究会「マヨラナ励起の実証に向けて」
  • Invited
• [Presentation] Higher-order topological phases in classical systems (2019)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Hiromu Araki, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: New Trends in topological insulators 2019 Variety and university of bulk-edge correspondence 2019_
  • Int'l Joint Research
• [Presentation] Spring-mass模型におけるHigher-orderトポロジカル相 (2019)
  • Author(s): Hiromasa Wakao, Tsuneya Yoshida, Hiromu Araki, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: 日本物理学会 2019年秋季大会
• [Presentation] Symmetry-protected exceptional rings and surfaces (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: Workshop Series on Non-Hermitian Quantum Mechanics
  • Int'l Joint Research / Invited
• [Presentation] Non-Hermitian topological phenomena for strongly correlated systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: Trends in Theory of Correlated Materials TTCM2019
  • Int'l Joint Research / Invited
• [Presentation] Non-Hermitian topological properties for correlated systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: Topological Quantum Matter: From Fantasy to Reality
  • Int'l Joint Research
• [Presentation] Symmetry-Protected Exceptional Rings in Two Dimensions (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: International Conference on strongly correlated electron systems 2019
  • Int'l Joint Research
• [Presentation] メカニカル系における対称性に保護されたエクセプショナルリング (2019)
  • Author(s): 吉田恒也、初貝安弘
  • Organizer: 日本物理学会 2019年秋季大会
• [Presentation] Symmetry-protected non-Hermitian degeneracies in quantum and classical systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: Progress in the Mathematics of Topological States of Matter
  • Int'l Joint Research / Invited
• [Presentation] Symmetry-protected exceptional rings for strongly correlated fermions (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: NTTI2019 and BEC2019
  • Int'l Joint Research
• [Presentation] Symmetry-protected non-Hermitian degeneracies and their emergence for mechanical systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: 統計力学セミナー(東京大学)
  • Invited
• [Presentation] Non-Hermitian perspective of strongly correlated systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: Frontiers of Correlated Electron Sciences
  • Int'l Joint Research
• [Presentation] Symmetry-protected exceptional rings for correlated two-dimensional systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: CEMS Symposium on Emergent Quantum Materials
  • Int'l Joint Research
• [Presentation] Symmetry-protection of non-Hermitian degeneracies for correlated systems (2019)
  • Author(s): Tsuneya Yoshida
  • Organizer: 羽田野研究室セミナー
  • Invited
• [Presentation] カゴメ格子上の異方的量スピン系基底状態と Z3ベリー位相 (2019)
  • Author(s): 石井航太、河原林透、初貝安弘
  • Organizer: 日本物理学会２０１９年秋季大会
• [Presentation] Quantum Monte Carlo study of the Z3 Berry Phase in an Anisotropic Kagome Magnet (2019)
  • Author(s): K. Ishii, Y. Hatsugai, T. Kawarabayashi
  • Organizer: the international workshop on New Trends in Topological Insulator & Variety and universality of bulk-edge correspondence in topological phases (NTTI2019 and BEC2019)
  • Int'l Joint Research
• [Remarks] トポロジカル相でのバルク・エッジ対応の多様性と普遍性：固体物理を越えて分野横断へ
  • URL: https://patricia.ph.tsukuba.ac.jp/hp-ja/reseach/kiban-s-ja/
• [Funded Workshop] BE/BC2020F (Bulk-Edge/Boundary Correspondence)（コロナウイルス蔓延のため実施4日前に仮想化を決定（トークファイル公開）） (2020)