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

2018 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): 高橋 義朗 京都大学, 理学研究科, 教授 (40226907) ; 木村 昭夫 広島大学, 理学研究科, 教授 (00272534) ; 福井 隆裕 茨城大学, 理工学研究科(理学野), 教授 (10322009) ; 河原林 透 東邦大学, 理学部, 教授 (90251488) ; 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) ; 岩本 敏 東京大学, 生産技術研究所, 准教授 (40359667)
• Project Period (FY): 2017-05-31 – 2022-03-31
• Keywords: バルクエッジ対応 / トポロジカル相 / 冷却原子 / 角度分解光電子分光 / フォトニック結晶 / エッジ状態 / 力学的トポロジカル相 / コーナー状態

Outline of Annual Research Achievements

年度当初の2日間の組織内研究会での密接な議論に基づきバルクエッジ対応に関する以下の研究を行った。
[1]本組織関連の数学者の理論に触発されてコーナー状態を(1)量子もつれの方法と (2)機械学習の手法で新しいバルクエッジ対応の観点で研究した。(3)分数量子化ベリー位相の量子スピン系での意義を確立した。(4)3次元バネ質点系のワイル点とバルクエッジ対応を解明した。(5)非エルミート系のトポロジカル相の理論を開拓し (6)多体のチャーン数に関する新知見を得た。[2]冷却原子に関して(1)様々な原子間相互作用の系でトポロジカルポンプを行い相互作用と乱れの効果を確認した。(2)トポロジカル超流動に向けて異種原子混合量子系生成装置の準備を完了した。(3)量子幾何テンソル測定の新規実験手法の開発，人工次元を用いたトポロジカル原子レーザーの可能性の追求，高空間分解能な原子検出の準備を行った。[3]放射光ARPES実験に関して(1)テラヘルツ光パルス時間分解によりDirac表面電子の光電場での加速現象を直接観測し弾道的電子流を実現した。(2) nonsymmorphicな単結晶表面で旋回型のスピンテクスチャを観測した。(3)層状反強磁性体のバルクエッジ対応に関して表面状態の観測を行い(4)銅酸化物超伝導体のAndreev束縛状態の観測も推進した。[4]フォトニック結晶等に関して(1)カイラルな系でトポロジカル状態の偏光特性を解明し(2)バレーフォトニック結晶導波路でエッジ状態に結合した量子ドット発光の高効率伝搬を実証した。(3)フォトニック結晶でコーナー状態の実現可能性を数値的に解明し(4)完全バンドギャップが利用可能なバレーフォノニック構造を見出した。
H30年12月に4日間の国際会議（参加者84）を主催し，国際的な研究交流を行った。広島大学と京都大学にて本経費で特定准教授の雇用を開始した。

Current Status of Research Progress

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

Reason

[1]理論的研究に関してバルクのトポロジカル数である(1)独自の分数量子化ベリー位相と(2)多体のチャーン数に関してPhys.Rev.Lett.誌に各1報論文を出版した。特に後者はEditors’suggestionに選定され高評価を得た。また，機械学習という現代的な新手法を研究に取りいれた。[2]冷却原子に関して，当初計画したトポロジカルポンプ実験に加えて，新に系のトポロジカルの性質を決めるベリー曲率および量子計量テンソルを実験的に測定する新たな実験手法の開発や，トポロジカルレーザー発振現象の物質波人工次元への応用に取り組む等，当初の計画以上に研究が進展している。[3]放射光ARPES実験に関して，光の1周期よりも短い時間スケールでトポロジカル絶縁体の表面ディラック電子の加速を観測した成果がNatureに掲載され注目を浴びた。また，層状反強磁性体における新たなタイプのトポロジカル相の発見についても現在評価が高い雑誌に論文を投稿中である。[4]フォトニック結晶等に関して量子ドットを有するバレーフォトニック結晶導波路の実現に関する報告に対して，国際会議論文賞が授与された。また，光以外の系への展開として，トポロジーを活用したオンチップ弾性波制御の可能性を見出すなど，当初計画を超える成果が得られた。この成果は，バルクエッジ対応の多様な系への展開を目指す本課題の今後の展開にも資するものである。
国際交流に関して，研究年度2年目にして第2回目の国際会議BEC2018X（4日間，参加者84）を開催し，数学者を招聘し多分野交流の場として初年度に増して国際的に好評を得た。
以上の具体的成果をもって当初予定より進展していると自己評価する。
なお本年度の研究協力者は，古田幹雄，井村健一郎，中島秀太，苅宿俊風，吉田恒也，本経費雇用研究者は溝口知成(H31.1.1から承継化)，岩澤英明，武井宣幸である。

Strategy for Future Research Activity

理論的になりがちな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る。
[1]理論的には量子/古典の多彩な系でのバルクエッジ対応を我々が提案してきたベリー接続の理論，量子もつれの理論等を用い，数学-物理の連携，交流の下で研究を進める。また，平坦バンドやディラック分散など特異分散とトポロジカル相/バルクエッジ対応の関連を追求し，また非平衡系，電子相関，超伝導，非エルミート系など未開拓な問題にも積極的に関与することで新しい展開を目指す。
[2]冷却原子に関して，これまで取り組んできたトポロジカルポンプについてその堅牢性に関して系統的な測定を完遂し，理論との定量的な比較を行い全容を明らかにする。また，量子幾何テンソルを測定する新たな実験手法を様々な格子系に適用する。更にこれまでに準備したトポロジカルレーザー発振現象の物質波人工次元への応用，トポロジカル超流動の生成に向けた混合量子系の生成，高空間分解能な原子検出法の開発を進める。
[3]放射光ARPES実験に関して，希土類を含む物質のトポロジカル相について放射光ARPESを行い，電子相関効果とバルクエッジ対応の関係を明らかとする。継続して層状反強磁性絶縁体について研究を進め，アクシオン絶縁相の探索を行う。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。[4]フォトニック結晶等に関して，本年までの研究を継続，発展させるとともに理論グループとの連携を更に密にし，機械系や構造体などの系への展開も図り，古典系における新規トポロジカル状態の実現とその応用の可能性を探求する。
今後も国際会議開催等の国際交流を重視し国際化させるとともに国際的視点から若手育成も積極的に行う。

Research Products

• [Int'l Joint Research] バスク国立大学(スペイン)
  • Country Name: SPAIN
  • Counterpart Institution: バスク国立大学
• [Int'l Joint Research] 中国科学院・上海微系統情報技術研究所(中国)
  • Country Name: CHINA
  • Counterpart Institution: 中国科学院・上海微系統情報技術研究所
• [Int'l Joint Research] サンクトペテルブスグ大学/トムスク大学(ロシア連邦)
  • Country Name: RUSSIA FEDERATION
  • Counterpart Institution: サンクトペテルブスグ大学/トムスク大学
• [Int'l Joint Research] フィリップス大学マールブルグ/ベルリンヘルムホルツセンター(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: フィリップス大学マールブルグ/ベルリンヘルムホルツセンター
• [Int'l Joint Research] トリエステ放射光施設(イタリア)
  • Country Name: ITALY
  • Counterpart Institution: トリエステ放射光施設
• [Int'l Joint Research]
  • # of Other Countries: 2
• [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] Weyl points of mechanical diamond (2019)
  • Author(s): Yuta Takahashi, Toshikaze Kariyado, and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 024102(1-8)
  • DOI: https://doi.org/10.1103/PhysRevB.99.024102
  • Peer Reviewed
• [Journal Article] Many-Body Chern Number without Integration (2019)
  • Author(s): Koji Kudo, Haruki Watanabe, Toshikaze Kariyado, and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. Lett. Volume: 122 Pages: 146601 (1-5)
  • DOI: https://doi.org/10.1103/PhysRevLett.122.146601
  • Peer Reviewed
• [Journal Article] Phase diagram of disordered higher-order topological insulator: A machine learning study (2019)
  • Author(s): Hiromu Araki, Tomonari Mizoguchi, and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 085406 (1-8)
  • DOI: https://doi.org/10.1103/PhysRevB.99.085406
  • Peer Reviewed
• [Journal Article] Fractionally Quantized Berry's Phase in an Anisotropic Magnet on the Kagome Lattice (2019)
  • Author(s): Tohru Kawarabayashi, Kota Ishii, and Yasuhiro Hatsugai
  • Journal Title: J. Phys. Soc. Jpn. Volume: 88 Pages: 45001
  • DOI: https://doi.org/10.7566/JPSJ.88.045001
  • Peer Reviewed
• [Journal Article] Topologically Protected Doubling of Tilted Dirac Fermions in Two Dimensions (2019)
  • Author(s): Tohru Kawarabayashi, Hideo Aoki, and Yasuhiro Hatsugai
  • Journal Title: Phys. Status Solidi B Volume: - Pages: 1800524(1-5)
  • DOI: https://doi.org/10.1002/pssb.201800524
  • Peer Reviewed
• [Journal Article] Antiferromagnetic Interorbital Spin-Exchange Interaction of 171Yb (2019)
  • Author(s): Koki Ono, Jun Kobayashi, Yoshiki Amano, Koji Sato, and Yoshiro Takahashi
  • Journal Title: Phys. Rev. A Volume: 99 Pages: 032707-1-7
  • DOI: https://doi.org/10.1103/PhysRevA.99.032707
  • Peer Reviewed
• [Journal Article] Dissipative Bose-Hubbard system with intrinsic two-body loss (2019)
  • Author(s): Takafumi Tomita, Shuta Nakajima, Yosuke Takasu and Yoshiro Takahashi
  • Journal Title: Phys. Rev. A Volume: 99 Pages: 031601-1-6
  • DOI: https://doi.org/10.1103/PhysRevA.99.031601
  • Peer Reviewed
• [Journal Article] Semiclassical quench dynamics of Bose gases in optical lattices (2019)
  • Author(s): Kazuma Nagao, Masaya Kunimi, Yosuke Takasu, Yoshiro Takahashi, and Ippei Danshita
  • Journal Title: Phys. Rev. A Volume: 99 Pages: 023622-1-11
  • DOI: https://doi.org/10.1103/PhysRevA.99.023622
  • Peer Reviewed
• [Journal Article] Inverted Dirac-electron population in a thermally activated topological insulator (2019)
  • Author(s): K. Sumida, Y. Ishida, T. Yoshikawa, J. Chen, M. Nurmamat, K. A. Kokh, O. E. Tereshchenko, S. Shin, and A. Kimura
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 085302 (1-6)
  • DOI: https://doi.org/10.1103/PhysRevB.99.085302
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dirac gap opening and Dirac-fermion-mediated magnetic coupling in antiferromagnetic Gd-doped topological insulators and their manipulation by synchrotron radiation (2019)
  • Author(s): A. M. Shikin, D. A. Estyunin, Yu. I. Surnin, A. V. Koroleva, E.V. Shevchenko, K. A. Kokh, O. E. Tereshchenko, S. Kumar, E. F. Schwier, K. Shimada, T. Yoshikawa, Y. Saitoh, Y. Takeda, and A. Kimura
  • Journal Title: Sci. Rep. Volume: 9 Pages: 4813 (1-17)
  • DOI: https://doi.org/10.1038/s41598-019-41137-w
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetic impurity mediated ultra-fast electron dynamics in the carrier-density-tuned topological insulator V0.04(BixSb1-x)2Te3 (2019)
  • Author(s): T. Xu, M. Wang, H. L. Zhu, W. J. Liu, T. C. Niu, A. Li, B. Gao, Y. Ishida, S. Shin, A. Kimura, M. Ye, and S. Qiao
  • Journal Title: Phys. Rev. B Volume: 99 Pages: 094308 (1-6)
  • DOI: https://doi.org/10.1103/PhysRevB.99.094308
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Observation of Chiral Fermions with a Large Topological Charge and Associated Fermi-Arc Surface States in CoSi (2019)
  • Author(s): Daichi Takane, Zhiwei Wang, Seigo Souma, Kosuke Nakayama, Takechika Nakamura, Hikaru Oinuma, Yuki Nakata, Hideaki Iwasawa, Cephise Cacho, Timur Kim, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yoichi Ando, and Takafumi Sato
  • Journal Title: Phys. Rev. Lett. Volume: 122 Pages: 076402 (1-9)
  • DOI: https://doi.org/10.1103/PhysRevLett.122.076402
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A weak topological insulator state in quasi-one-dimensional bismuth iodide (2019)
  • Author(s): Ryo Noguchi, T. Takahashi, K. Kuroda, M. Ochi, T. Shirasawa, M. Sakano, C. Bareille, M. Nakayama, M. D. Watson, K. Yaji, A. Harasawa, H. Iwasawa, P. Dudin, T. K. Kim, M. Hoesch, V. Kandyba, A. Giampietri, A. Barinov, S. Shin, R. Arita, T. Sasagawa & Takeshi Kondo
  • Journal Title: Nature Volume: 566 Pages: 518 (1-9)
  • DOI: https://doi.org/10.1038/s41586-019-0927-7
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Design of GaAs-based valley phononic crystals with multiple complete phononic bandgaps at ultra-high frequency (2019)
  • Author(s): I. Kim, Y. Arakawa, and S. Iwamoto
  • Journal Title: Appl. Phys. Express Volume: 12 Pages: 047001(1-6)
  • DOI: https://doi.org/10.7567/1882-0786/ab0772
  • Peer Reviewed
• [Journal Article] ZN Berry Phases in Symmetry Protected Topological Phases (2018)
  • Author(s): Toshikaze Kariyado, Takahiro Morimoto, and Yasuhiro Hatsugai
  • Journal Title: Phys. Rev. Lett. Volume: 120 Pages: 247202(1-5)
  • DOI: https://doi.org/10.1103/PhysRevLett.120.247202
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fractional Quantum Hall Effect in n = 0 Landau Band of Graphene with Chern Number Matrix (2018)
  • Author(s): Koji Kudo and Yasuhiro Hatsugai
  • Journal Title: J. Phys. Soc. Jpn. Volume: 87 Pages: 063701 (1-5)
  • DOI: https://journals.jps.jp/doi/10.7566/JPSJ.87.063701
  • Peer Reviewed
• [Journal Article] Entanglement polarization for the topological quadrupole phase (2018)
  • Author(s): T. Fukui and Y. Hatsugai
  • Journal Title: Phys. Rev. B Volume: 98 Pages: 035147 (1-13)
  • DOI: https://doi.org/10.1103/PhysRevB.98.035147
  • Peer Reviewed
• [Journal Article] Non-Hermitian perspective of the band structure in heavy-fermion systems (2018)
  • Author(s): Tsuneya Yoshida, Robert Peters, and Norio Kawakami
  • Journal Title: Phys. Rev. B Volume: 98 Pages: 035141(1-7)
  • DOI: https://doi.org/10.1103/PhysRevB.98.035141
  • Peer Reviewed
• [Journal Article] Experimental realization of ultracold Yb-7Li mixtures in mixed dimensions (2018)
  • Author(s): F. Schaefer, N. Mizukami, P. Yu, S. Koibuchi, A. Bouscal, and Y. Takahashi,
  • Journal Title: Phys. Rev. A Volume: 98 Pages: 051602-1-6
  • DOI: https://doi.org/10.1103/PhysRevA.98.051602
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Generalized lattice Wilson-Dirac fermions in (1+1) dimensions for atomic quantum simulation and topological phases (2018)
  • Author(s): Yoshihito Kuno, Ikuo Ichinose and Yoshiro Takahashi
  • Journal Title: Sci. Rep. Volume: 8 Pages: 10699-1-13
  • DOI: https://doi.org/10.1038/s41598-018-29143-w
  • Peer Reviewed / Open Access
• [Journal Article] Dirac cone intensity asymmetry and surface magnetic field in V-doped and pristine topological insulators generated by synchrotron and laser radiation (2018)
  • Author(s): A. M. Shikin, A. A. Rybkina, D. A. Estyunin, D. M. Sostina, I. I. Klimovskikh, V. Yu. Voroshnin, A. G. Rybkin, K. A. Kokh, O. E. Tereshchenko, L. Petaccia, G. Di Santo, A. Kimura, P. N. Skirdkov, K. A. Zvezdin, and A. K. Zvezdin
  • Journal Title: Sci. Rep. Volume: 8 Pages: 6544 (1-9)
  • DOI: https://doi.org/10.1038/s41598-018-24716-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhanced photovoltage on the surface of topological insulator by optical aging (2018)
  • Author(s): Tomoki Yoshikawa, Yukiaki Ishida, Kazuki Sumida, Jiahua Chen, Konstantin, A. Kokh, Oleg E. Tereshchenko, Shik Shin, and Akio Kimura
  • Journal Title: Appl. Phys. Lett. Volume: 112 Pages: 192104 (1-4)
  • DOI: https://aip.scitation.org/doi/10.1063/1.5008466
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electronic and spin structure of the wide-band-gap topological insulator: Nearly stoichiometric Bi2Te2S (2018)
  • Author(s): E. Annese, T. Okuda, E. F. Schwier, H. Iwasawa, K. Shimada, M. Natamane, M. Taniguchi, I. P. Rusinov, S. V. Eremeev, K. A. Kokh, O. E. Tereshchenko, E. V. Chulkov, and A. Kimura
  • Journal Title: Phys. Rev. B Volume: 97 Pages: 205113 (1-6)
  • DOI: https://doi.org/10.1103/PhysRevB.97.205113
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Shubnikov-de Haas oscillations in p and n-type topological insulator (BixSb1-x)2Te3 (2018)
  • Author(s): Ryota Akiyama, Kazuki Sumida, Satoru Ichinokura, Akio Kimura, Konstantin A. Kokh, Oleg E. Tereshchenko, and Shuji Hasegawa
  • Journal Title: J. Phys. Condens. Matter Volume: 30 Pages: 265001 (1-8)
  • DOI: https://doi.org/10.1088/1361-648X/aac59b
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators (2018)
  • Author(s): A. M. Shikin, A. A. Rybkina, D. A. Estyunin, D. M. Sostina, V. Yu. Voroshnin, I. I. Klimovskikh, A. G. Rybkin, Yu. A. Surnin, K. A. Kokh, O. E. Tereshchenko, L. Petaccia, G. Di Santo, P. N. Skirdkov, K. A. Zvezdin, A. K. Zvezdin, A. Kimura, E. V. Chulkov, and E. E. Krasovskii
  • Journal Title: Phys. Rev. B Volume: 97 Pages: 245407 (1-15)
  • DOI: https://doi.org/10.1103/PhysRevB.97.245407
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Prolonged photo-carriers generated in a massive-and-anisotropic Dirac material (2018)
  • Author(s): Munisa Nurmamat, Ryohei Yori, Yukiaki Ishida, Kazuki Sumida, Siyuan Zhu, Masashi Nakatake, Yoshifumi Ueda, Masaki Taniguchi, Shik Shin, Yuichi Akahama, and Akio Kimura
  • Journal Title: Sci. Rep. Volume: 8 Pages: 9073 (1-7)
  • DOI: https://doi.org/10.1038/s41598-018-27133-6
  • Peer Reviewed / Open Access
• [Journal Article] Subcycle observation of lightwave-driven Dirac currents in a topological surface band (2018)
  • Author(s): J. Reimann, S. Schlauderer, C. P. Schmid, F. Langer, S. Baierl, K. A. Kokh, O. E. Tereshchenko, A. Kimura, C. Lange, J. Guフ?dde, U. Hテカfer, and R. Huber
  • Journal Title: Nature Volume: 562 Pages: 396-400
  • DOI: https://doi.org/10.1038/s41586-018-0544-x
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Enhanced surface state protection and band gap of PbBi4Te4S3 (2018)
  • Author(s): K. Sumida, T. Natsumeda, K. Shirai, K. Kuroda, S. Zhu, K. Taguchi, K. Miyamoto, M. Arita, J. Fujii, K. A. Kokh, O. E. Tereshchenko, E. V. Chulkov, T. Okuda, and A. Kimura
  • Journal Title: Phys. Rev. Mater. Volume: 2 Pages: 104201 (1-8)
  • DOI: https://doi.org/10.1103/PhysRevMaterials.2.104201
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Three-dimensional electronic structure of the nematic and antiferromagnetic phases of NaFeAs from detwinned angle-resolved photoemission spectroscopy (2018)
  • Author(s): Matthew D. Watson, Saicharan Aswartham, Luke C. Rhodes, Benjamin Parrett, Hideaki Iwasawa, Moritz Hoesch, Igor Morozov, Bernd Buechner, and Timur K. Kim
  • Journal Title: Phys. Rev. B Volume: 97 Pages: 35134
  • DOI: https://doi.org/10.1103/PhysRevB.97.035134
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Surface termination and electronic reconstruction in YBa2Cu3O7-delta (2018)
  • Author(s): Hideaki Iwasawa, Niels B. M. Schroeter, Takahiko Masui, Setsuko Tajima, Timur K. Kim, and Moritz Hoesch
  • Journal Title: Phys. Rev. B Volume: 98 Pages: 081112(R) (1-6)
  • DOI: https://doi.org/10.1103/PhysRevB.98.081112
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe (2018)
  • Author(s): Takafumi Sato, Zhiwei Wang, Kosuke Nakayama, Seigo Souma, Daichi Takane, Yuki Nakata, Hideaki Iwasawa, Cephise Cacho, Timur Kim, Takashi Takahashi, and Yoichi Ando
  • Journal Title: Phys. Rev. B Volume: 98 Pages: 121111(R) (1-6)
  • DOI: https://doi.org/10.1103/PhysRevB.98.121111
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Accurate and efficient data acquisition methods for highresolution angle-resolved photoemission microscopy (2018)
  • Author(s): Hideaki Iwasawa, Hitoshi Takita, Kazuki Goto, Wumiti Mansuer, Takeo Miyashita, Eike F. Schwier, Akihiro Ino, Kenya Shimada & Yoshihiro Aiura
  • Journal Title: Sci. Rep. Volume: 8 Pages: 14731 (1-9)
  • DOI: https://doi.org/10.1038/s41598-018-34894-7
  • Peer Reviewed / Open Access
• [Journal Article] Topological photonic crystal nanocavity laser (2018)
  • Author(s): Y. Ota, R. Katsumi, K. watanabe, S. Iwamoto, and Y. Arakawa
  • Journal Title: Commun. Phys. Volume: 1 Pages: 86(1-8)
  • DOI: https://doi.org/10.1038/s42005-018-0083-7
  • Peer Reviewed / Open Access
• [Journal Article] Circularly Polarized Topological Edge States Derived from Optical Weyl Points in Semiconductor-Based Chiral Woodpile Photonic Crystals (2018)
  • Author(s): S. Takahashi, S. Oono, S. Iwamoto, Y. Hatsugai, and Y. Arakawa
  • Journal Title: J. Phys. Soc. Jpn. Volume: 87 Pages: 123401(1-5)
  • DOI: https://doi.org/10.7566/JPSJ.87.123401
  • Peer Reviewed
• [Presentation] Lasing in a topological nanocavity with quantum dot gain (2019)
  • Author(s): Y. Ota, S. Iwamoto and Y. Arakawa
  • Organizer: Photonics West 2019
  • Int'l Joint Research / Invited
• [Presentation] Quantum simulation using two-electron atoms in an optical lattice (2019)
  • Author(s): Yoshiro Takahashi
  • Organizer: The Institute of Physics, Academia Sinica
  • Int'l Joint Research / Invited
• [Presentation] Topological phases to bulk-edge correspondence (2019)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: NTT Basic Laboratory Seminar
  • Invited
• [Presentation] バルクエッジ対応の普遍性 (2019)
  • Author(s): 初貝安弘
  • Organizer: Topological Materials Science, The 4-th Annual Meeting (Nagoya Univ.)
  • Invited
• [Presentation] トポロジカルフォトニクス：トポロジーを活用した光制御 (2019)
  • Author(s): 岩本敏
  • Organizer: 第15回 フォトニクス・イノベーションセミナー
  • Invited
• [Presentation] 半導体フォトニック結晶を基礎としたトポロジカルフォトニクス (2019)
  • Author(s): 岩本敏，山口拓人，太田泰友，荒川泰彦
  • Organizer: 一般社団法人レーザー学会学術講演会 第39回年次大会
  • Invited
• [Presentation] Design of GaAs-based valley phononic crystals with multiple complete phononic bandgaps (2019)
  • Author(s): I. Kim, Y. Arakawa, and S. Iwamoto
  • Organizer: Photonics West 2019
  • Int'l Joint Research
• [Presentation] One-plaquette Chern number: Many-body Chern number without integration (2019)
  • Author(s): 工藤耕司, 渡辺悠樹,苅宿俊風,初貝安弘
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] Majorana edge magnetization in the Kitaev honeycomb model (2019)
  • Author(s): Tomonari Mizoguchi and Tohru Koma
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems (TPFC2019)
  • Int'l Joint Research
• [Presentation] Effects of boundary on a kagome Ising model with magnetic-charge interaction (2019)
  • Author(s): Tomonari Mizoguchi and Yasuhiro Hatsugai
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] Detection of higher order topological phase in a disordered breathing Kagome model by using machine learning (2019)
  • Author(s): Hiromu Araki, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] A bi-directional photovoltaic shift on the surface of topological insulators (2019)
  • Author(s): Tomoki Yoshikawa, Kazuki Sumida, Yukiaki Ishida, Jiahua Chen, Munisa Nurmamat, Konstantin A. Kokh, Oleg E. Tereshchenko, Shik Shin, Akio Kimura
  • Organizer: The Second International Workshop Emergent Condensed-Matter Physics
  • Int'l Joint Research
• [Presentation] A bi-directional photovoltaic shift on the surface of topological insulators (2019)
  • Author(s): Tomoki Yoshikawa, Kazuki Sumida, Yukiaki Ishida, Jiahua Chen, Munisa Nurmamat, Konstantin A. Kokh, Oleg E. Tereshchenko, Shik Shin, Akio Kimura
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] Enhanced Surface State Protection and Band Gap in the Topological Insulator PbBi4Te4S3 (2019)
  • Author(s): K. Sumida, T. Natsumeda, K. Miyamoto, I. V. Silkin, K. Kuroda, K. Shirai, S. Zhu, K. Taguchi, M. Arita, J. Fujii, A. Varykhalov, O. Rader, V. A. Golyashov, K. A. Kokh, O. E. Tereshchenko, E. V. Chulkov, A. Kimura
  • Organizer: The 23rd Hiroshima International Symposium on Synchrotron Radiation
  • Int'l Joint Research
• [Presentation] Design of Multi-channel spin detector at HiSOR (2019)
  • Author(s): T. Matsuda, K. Miyamoto, A. Kimura, T. Okuda
  • Organizer: The 23rd Hiroshima International Symposium on Synchrotron Radiation
  • Int'l Joint Research
• [Presentation] Large energy-scale band renormalization in Sr2RuO4 (2019)
  • Author(s): S. Ozawa, H. Iwasawa, H. Oda, T. Yoshikawa, A. Kimura, T. Muro, Y. Yoshida, I. Hase, Y. Aiura, W. Yamamoto, E. F. Schwier, K. Shimada
  • Organizer: The 23rd Hiroshima International Symposium on Synchrotron Radiation
  • Int'l Joint Research
• [Presentation] High-resolution ARPES study of La2-xSrxCuO4 (2019)
  • Author(s): H. Oda, H. Iwasawa, T. Miyashita, S. Ozawa, A. Kimura, R. Yano, S. Kashiwaya, W. Yamamoto, E. F. Schwier, K. Shimada
  • Organizer: The 23rd Hiroshima International Symposium on Synchrotron Radiation
  • Int'l Joint Research
• [Presentation] Micro-ARPES study on the cuprate superconductor YBCO (2019)
  • Author(s): H. Iwasawa, N. B. M. Schroeter, T. Masui, S. Tajima, T. K. Kim, M. Hoesch
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] Co-substitution effect on electronic structure of high-Tc cuprate superconductor, Bi2Sr2Ca(Cu1-xCox)2O8 (2019)
  • Author(s): Takeo Miyashita, Wumiti Mansuer, Hitoshi Takita, Takuya Kubo, Satoshi Ishizaka, Hideaki Iwasawa, Eike F Schwier, Kenya Shimada, Masashi Arita, Yoshinori Numata, Tatsuro Uto, Azusa Matsuda, Akihiro Ino
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] High-resolution ARPES study of La2-xSrxCuO4 (2019)
  • Author(s): H. Oda, H. Iwasawa, T. Miyashita, S. Ozawa, A. Kimura, R. Yano, S. Kashiwaya, W. Yamamoto, E. F. Schwier, K. Shimada
  • Organizer: The Second International Workshop Emergent Condensed-Matter Physics
  • Int'l Joint Research
• [Presentation] Large scale band renormalization in Sr2RuO4 (2019)
  • Author(s): S. Ozawa, H. Iwasawa, H. Oda, T. Yoshikawa, A. Kimura, T. Muro, Y. Yoshida, I. Hase, Y. Aiura
  • Organizer: The Second International Workshop Emergent Condensed-Matter Physics
  • Int'l Joint Research
• [Presentation] Angle-resolved Photoemission Study of Energy Gap of Bi2Sr2Ca(Cu1-xCox)2O8 (2019)
  • Author(s): Takeo Miyashita, Wumiti Mansuer, Hitoshi Takita, Takuya Kubo, Satoshi Ishizaka, Hideaki Iwasawa, Eike F Schwier, Kenya Shimada, Masashi Arita, Yoshinori Numata, Tatsuro Uto, Azusa Matsuda, Akihiro Ino
  • Organizer: The Second International Workshop Emergent Condensed-Matter Physics
  • Int'l Joint Research
• [Presentation] 非可換ゲージ場中のディラック粒子系におけるn=0ランダウ準位のランダムネスに対する安定性 (2019)
  • Author(s): 藤澤周平, 初貝安弘, 河原林透
  • Organizer: 日本物理学会第７４回年次大会
• [Presentation] トポロジカルコーナー状態によるフォトニック結晶ナノ共振器の実現 (2019)
  • Author(s): 太田 泰友、Feng Liu、勝見 亮太、渡邉 克之、若林 克法、荒川 泰彦、岩本 敏
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] バレーフォトニック結晶低群速度エッジ状態における分散制御の検討 (2019)
  • Author(s): 吉見 拓展、山口 拓人、太田 泰友、荒川 泰彦、岩本 敏
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] 異なるカイラリティを有する半導体三次元フォトニック結晶の界面におけるトポロジカルエッジ状態の検討 (2019)
  • Author(s): 高橋 駿、大野 修平、初貝 安弘、荒川 泰彦、岩本 敏
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] 全誘電体三次元カイラルフォトニック結晶におけるマイクロ波領域トポロジカルエッジ状態の観測 (2019)
  • Author(s): 玉置 爽真、高橋 駿、山下 兼一、山口 拓也、上田 哲也、初貝 安弘、荒川 泰彦、岩本 敏
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] Symmetry-protected exceptional rings in two-dimensional correlated systems (2019)
  • Author(s): Tsuneya Yoshida, Robert Peters, Norio Kawakami, and Yasuhiro Hatsugai
  • Organizer: APS march meeting 2019
• [Presentation] 強相関効果が誘起する非エルミートトポロジカル物性 (シンポジウム:非エルミート量子力学の新展開) (2019)
  • Author(s): 吉田恒也
  • Organizer: 日本物理学会年次大会2019
• [Presentation] 格子ブリルアンゾーンにおけるメビウストポロジカル相の特徴付け～Fukui-Hatsugai-Suzuki 公式の拡張～ (2019)
  • Author(s): 吉田恒也、大同暁人、川上則雄、柳瀬陽一
  • Organizer: 日本物理学会年次大会2019
• [Presentation] カゴメ格子上の高次トポロジカル絶縁体における電子相関 (2019)
  • Author(s): 工藤耕司,吉田恒也,初貝安弘
  • Organizer: 日本物理学会第74回年次大会_
• [Presentation] フラットバンド模型の「分子軌道」による表現とその応用 (2019)
  • Author(s): 溝口知成,宇田川将文, 初貝安弘
  • Organizer: 日本物理学会第74年次大会
• [Presentation] 機械学習による乱れたカゴメ高次トポロジカル絶縁体の相の決定 (2019)
  • Author(s): 荒木広夢、溝口知成、初貝安弘
  • Organizer: 日本物理学会2019年年次大会
• [Presentation] Yb原子1S0-3P0遷移分光のための干渉フィルタを用いた外部共振器型半導体レーザーの開発と評価 (2019)
  • Author(s): 高田佳弘, 中島秀太, 小林淳, 小野滉貴, 天野良樹, 山下和也, 富田隆文, 奥野大地, 肥後本隼也, 中村智裕, 高橋義朗
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] SU(3)-discrete truncated-Wigner近似の開発と冷却原子系への応用 (2019)
  • Author(s): 長尾一馬, 高須洋介, 高橋義朗, 段下一平
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 光超格子中におけるSU(N)冷却フェルミ気体の多体スピン相関 (2019)
  • Author(s): 西澤直樹, 田家慎太郎, 八神智哉, 佐久間啓太, 武井宣幸, 高須洋介, 久野義人, 高橋義朗
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 一般シンポジウム講演「冷却原子を用いた非エルミート量子多体系の実験的研究」 (2019)
  • Author(s): 高須 洋介
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 散逸下の光格子中強相関多体系の研究 (2019)
  • Author(s): 八神智哉, 高須洋介, 久野義人, 富田隆文, 田家慎太郎, 西沢直樹, 佐久間啓太, 高橋義朗
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 真空スクイーズド状態を用いた光格子中単一原子の非破壊測定の提案 (2019)
  • Author(s): 奥野大地, 天野良樹, 武井宣幸, 山下和也, 髙田佳弘, 富田隆文, 榎本勝成, 高橋義朗
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] コーナー状態を持つディラック・フェルミオン模型 (2019)
  • Author(s): 福井隆裕
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 高次トポロジカル絶縁体における分数コーナー電荷 (2019)
  • Author(s): 吉田旭, 大瀧理麻子, 大滝友里亜, 福井隆裕
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] Bulk-edge corresponding : another look at (2018)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Progress in the mathematics of topological states of matter (WPI-AIMR, Tohoku University)
  • Int'l Joint Research / Invited
• [Presentation] Bulk-edge corresponding revisited (2018)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Recent progress in mathematics of topological insulators (ETH Z_rich)
  • Int'l Joint Research / Invited
• [Presentation] Corner states of Kagome lattice & related (2018)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: Trends in Theory of Correlated Materials (TTCM) 2018 (Geneve Univ)
  • Int'l Joint Research / Invited
• [Presentation] Welcome! Bulk-edge correspondence in topological phases (2018)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" [ BEC2018X ]
  • Int'l Joint Research / Invited
• [Presentation] Topological zero-energy states in deformed fermion-vortex systems (2018)
  • Author(s): Tohru Kawarabayashi
  • Organizer: international workshop “Variety and universality of bulk-edge correspondence in topological phases: from solid state physics to transdisciplinary concepts” (BEC2018X)
  • Int'l Joint Research / Invited
• [Presentation] Photonic crystal nanocavities by topological concept (2018)
  • Author(s): S. Iwamoto
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X)
  • Int'l Joint Research / Invited
• [Presentation] Tailored Disorders in Photonic Crystals for Laser and Cavity QED Applications (2018)
  • Author(s): S. Iwamoto, Y. Ota, K. Kuruma, T. Tajiri, S. Takahashi, R. Katsumi, M. Kakuda, K. Watanabe and Y. Arakawa
  • Organizer: MRS Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] Valley-Protected Edge State in Semiconductor Photonic Crystal Slab (2018)
  • Author(s): S. Iwamoto, T. Yamaguchi, Y. Ota, and Y. Arakawa
  • Organizer: Workshop on Innovative Nanoscale Devices and Systems (WINDS2018)
  • Int'l Joint Research / Invited
• [Presentation] Topological edge states in semiconductor-based photonic crystals (2018)
  • Author(s): S. Iwamoto, Y. Ota, T. Yamaguchi, and Y. Arakawa
  • Organizer: China-Japan International Workshop on Quantum Technologies (QTech 2018)
  • Int'l Joint Research / Invited
• [Presentation] Topological Localized State in Photonic Crystal Nanobeam (2018)
  • Author(s): S. Iwamoto, Y. Ota, R. Katsumi. K. Watanabe, and Y. Arakawa
  • Organizer: Progress In Electromagnetics Research Symposium (PIERS) 2018
  • Int'l Joint Research / Invited
• [Presentation] Symmetry-protected exceptional rings in two-dimensional correlated systems (2018)
  • Author(s): Tsuneya Yoshida
  • Organizer: BEC2018X
  • Int'l Joint Research / Invited
• [Presentation] Designing flat-band models by using the molecular-orbital representation (2018)
  • Author(s): Tomonari Mizoguchi, Masafumi Udagawa, Yasuhiro Hatsugai
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" [ BEC2018X ]
  • Int'l Joint Research / Invited
• [Presentation] Quantum simulation using two-electron atoms in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: 685. WE-Heraeus-Seminar on 'Research Frontiers in Ultracold QuantumGases
  • Int'l Joint Research / Invited
• [Presentation] Study of the interacting Su-Schrieffer-Heeger model in cold atoms in optical lattices and the relationship with the Gross-Neveu model on lattice (2018)
  • Author(s): Yoshihito Kuno
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts"[ BEC2018X ]
  • Int'l Joint Research / Invited
• [Presentation] Effects of disorder and interaction on topological Thouless pumping of ultracold fermions (2018)
  • Author(s): Nobuyuki Takei
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts"[ BEC2018X ]
  • Int'l Joint Research / Invited
• [Presentation] Quantum magnetism of ytterbium Fermi gases in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: The ITAMP workshop "Quantum Phases of Fermions in Optical Lattices: The Low-Temperature Frontier"
  • Int'l Joint Research / Invited
• [Presentation] Quantum magnetism of ultracold ytterbium Fermi gases in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: 7th International Workshop on Ultra-cold Group II Atoms
  • Int'l Joint Research / Invited
• [Presentation] Development of SU(N) Antiferromagnetic Correlations in Optical Lattices (2018)
  • Author(s): Shintaro Taie, Hideki Ozawa, Naoki Nishizawa, Yosuke Takasu, Yoshiro Takahashi
  • Organizer: US-Japan QELS-13( the 13th Japan-US Joint Seminar on Quantum Electronics and Laser Spectroscopy)
  • Int'l Joint Research / Invited
• [Presentation] Quantum simulation using ultracold ytterbium in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: US-Japan QELS-13( the 13th Japan-US Joint Seminar on Quantum Electronics and Laser Spectroscopy)
  • Int'l Joint Research / Invited
• [Presentation] (C) Colloquium Topic: Quantum simulation of many-body systems using ultracold ytterbium atoms: from thermal equilibrium state to non-equilibrium dynamics (2018)
  • Author(s): Yousuke Takasu
  • Organizer: Okinawa School in Physics 2018: Coherent Quantum Dynamics
  • Int'l Joint Research / Invited
• [Presentation] Advanced quantum simulator with novel spin and orbital degrees of freedom (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: Japan-EU Joint Workshop on Advanced Quantum Technology for Future Innovation
  • Int'l Joint Research / Invited
• [Presentation] Quantum Simulation with Ytterbium Fermi Gases (2018)
  • Author(s): Y. Takahashi, Y. Takasu, S. Taie, H. Ozawa, K. Ono, Y. Amano, K. Sato, and J.Kobayashi
  • Organizer: The 26th International Conference on Atomic Physics(ICAP2018)
  • Int'l Joint Research / Invited
• [Presentation] Topological Thouless Pumping in a One-Dimensional Optical Superlattice (2018)
  • Author(s): Shuta Nakajima
  • Organizer: The 2nd TMS-PKU Alliance Workshop on Topological Materials and Quantum Materials
  • Int'l Joint Research / Invited
• [Presentation] Exchange interaction in magnetically doped topological insulators (2018)
  • Author(s): Akio Kimura
  • Organizer: From Solid State to Biophysics IX
  • Int'l Joint Research / Invited
• [Presentation] ARPES study on High-Tc Cuprate Superconductor (2018)
  • Author(s): Hideaki Iwasawa
  • Organizer: 2018 Japan-Korea Student workshop (Hiroshima University - Pusan National University)
  • Int'l Joint Research / Invited
• [Presentation] Andreev bound states in cuprate superconductors studied by ARPES (2018)
  • Author(s): Hideaki Iwasawa
  • Organizer: International workshop on “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Int'l Joint Research / Invited
• [Presentation] トポロジカル相の発見とその展開 (2018)
  • Author(s): 初貝安弘
  • Organizer: 九州大学集中講義_
  • Invited
• [Presentation] Short-range entangled states & bulk-edge correspondence: Symmetry protection and ZN Berry phases (2018)
  • Author(s): Yasuhiro Hatsugai
  • Organizer: 九州大学セミナー
  • Invited
• [Presentation] トポロジカル相におけるベリー接続とバルク・エッジ対応 (2018)
  • Author(s): 初貝安弘
  • Organizer: 早稲田大学セミナー
  • Invited
• [Presentation] トポロジカルフォトニクス -フォトニック結晶研究の新たな展開- (2018)
  • Author(s): 岩本敏
  • Organizer: 京都工芸繊維大学 電子システム工学シンポジウム
  • Invited
• [Presentation] Topological confinement of light in photonic crystals (2018)
  • Author(s): Satoshi Iwamoto, Yasutomo Ota, and Yasuhiko Arakawa
  • Organizer: OSJ/OSA/OSK Joint Sumposia in Optics (in Optics & Photonics Japan 2018)
  • Invited
• [Presentation] Topological photonics based on semiconductor photonic crystals (2018)
  • Author(s): Satoshi Iwamoto
  • Organizer: 8th Summer School on Smeiconductors/Superconductor Quantum Choherence Effect and Quantum Information
  • Invited
• [Presentation] フォトニック結晶構造を基礎としたトポロジカルフォトニクス (2018)
  • Author(s): 岩本敏
  • Organizer: 応用物理学会 応用電子物性分科会 研究例会
  • Invited
• [Presentation] 強相関揺らぎが誘起する非エルミート物性 (2018)
  • Author(s): 吉田恒也
  • Organizer: 非平衡・非エルミート系の新奇量子現象
  • Invited
• [Presentation] 準粒子ダンピングに起因する例外点の研究 (2018)
  • Author(s): 吉田恒也
  • Organizer: 第八回「強相関電子系理論の最前線」
  • Invited
• [Presentation] Effect of boundary on hexamer classical spin liquid on a kagome lattice (2018)
  • Author(s): 溝口知成, 初貝安弘
  • Organizer: Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" Informal Workshop
  • Invited
• [Presentation] 冷却原子系を用いた量子シミュレーション (2018)
  • Author(s): 中島秀太
  • Organizer: 物性研短期研究会 量子情報・物性の新潮流
  • Invited
• [Presentation] 磁性元素ドープされたトポロジカル絶縁体の強磁性電子状態 (2018)
  • Author(s): 木村昭夫
  • Organizer: 日本物理学会2018年秋季大会
  • Invited
• [Presentation] Diamondにおける最先端ARPES：計測技術と高効率化 (2018)
  • Author(s): 岩澤英明
  • Organizer: 第10回放射光学会若手研究会「放射光科学 × インフォマティクス」
  • Invited
• [Presentation] 最先端放射光ARPESの現状と展望 (2018)
  • Author(s): 岩澤英明
  • Organizer: 第10回QSTセミナー
  • Invited
• [Presentation] Topological order parameters of J1-J2 Heisenberg chains of S=1,2 and 3 (2018)
  • Author(s): S. Fubasami and Y. Hatsugai
  • Organizer: International Conference on Magnetism 2018 (ICM2018)
  • Int'l Joint Research
• [Presentation] Topological order in quantum phases in anisotropic Kagome magnets (2018)
  • Author(s): Tohru Kawarabayashi, Kota Ishii, Yasuhiro Hatsugai
  • Organizer: the 23rd international conference on High Magnetic Fields in Semiconductor Physics
  • Int'l Joint Research
• [Presentation] Topologically Protected Doubling of Tilted Dirac Fermions in Two Dimensions (2018)
  • Author(s): Tohru Kawarabayashi, Hideo Aoki, Yasuhiro Hatsugai
  • Organizer: the 34th international conference on the Physics of Semiconductors,
  • Int'l Joint Research
• [Presentation] Robust n=0 Landau levels of Dirac particles in an non-abelian gauge fields, (2018)
  • Author(s): Shuhei Fujisawa, Yasuhiro Hatsugai, Tohru Kawarabayashi
  • Organizer: international workshop “Variety and universality of bulk-edge correspondence in topological phases: from solid state physics to transdisciplinary concepts” (BEC2018X)
  • Int'l Joint Research
• [Presentation] Observation of light transmission in a GaAs slab valley photonic crystal waveguide with sharp bends (2018)
  • Author(s): T. Yamaguchi, Y. Ota, R. Katsumi, A. Osada, S. Ishida, 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” (BEC2018X)
  • Int'l Joint Research
• [Presentation] Design of valley phononic crystal with piezoelectric material (2018)
  • Author(s): Z. Sun, I. Kim and S. Iwamoto
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X)
  • Int'l Joint Research
• [Presentation] Topological light from optical micro-ring cavity (2018)
  • Author(s): W. Lin, Y. Ota, 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” (BEC2018X)
  • Int'l Joint Research
• [Presentation] Observation of topologically protected light propagation in a slab-type valley photonic crystal waveguide (2018)
  • Author(s): T. Yamaguchi, R. Katsumi, A. Osada, Y. Ota, S. Ishida, S. Iwamoto and Y. Arakawa
  • Organizer: The 23rd MICROOPTICS CONFERENCE (MOC2018)
  • Int'l Joint Research
• [Presentation] Lasing in a topological photonic crystal nanocavity (2018)
  • Author(s): Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa
  • Organizer: Conference on Lasers and Electro-Optics(CLEO 2018)
  • Int'l Joint Research
• [Presentation] Testbeds of topological classification for correlated systems (2018)
  • Author(s): Tsuneya Yoshida
  • Organizer: Symmetry and Topology in Condensed-Matter Physics
  • Int'l Joint Research
• [Presentation] Ultracolddipolar fermions as an experimental platform for the reduction of topological classification ~Testbedsof topological classification for correlated systems~ (2018)
  • Author(s): Tsuneya Yoshida, Ippei Danshita, Robert Peters, and Norio Kawakami
  • Organizer: International Conference on Magnetism 2018
  • Int'l Joint Research
• [Presentation] Non-Hermitian perspective on strongly correlated Dirac electrons (2018)
  • Author(s): Tsuneya Yoshida, Robert Peters, Norio Kawakami, Yasuhiro Hatsugai
  • Organizer: Trends in Theory of Correlated Materials 2018
  • Int'l Joint Research
• [Presentation] Many-body Chern number matrix in fractional quantum Hall effect of graphene (2018)
  • Author(s): 工藤耕司, 初貝安弘
  • Organizer: International Workshop on SYMMETRY & TOPOLOGY in Condensed-Matter physics
  • Int'l Joint Research
• [Presentation] Halperin 331 state of the FQH system of the n=0 Landau band of graphene (2018)
  • Author(s): 工藤耕司, 初貝安弘
  • Organizer: The 23rd International Conference on High Magnetic Fields in Semiconductor Physics_
  • Int'l Joint Research
• [Presentation] Exponential accuracy of many-body Chern number without integration (2018)
  • Author(s): 工藤耕司, 渡辺悠樹,苅宿俊風,初貝安弘
  • Organizer: Bulk-Edge Correspondence 2018X (BEC2018X)
  • Int'l Joint Research
• [Presentation] Bulk-boundary correspondence in a kagome classical spin liquid (2018)
  • Author(s): Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: Trends in Theory of Correlated Materials 2018 (TTCM2018)
  • Int'l Joint Research
• [Presentation] Z3 Berry phases for the Kagome higher order topological insulator model (2018)
  • Author(s): Hiromu Araki, Tomonari Mizoguchi, Yasuhiro Hatsugai
  • Organizer: Trends in Theory of Correlated Materials 2018 (TTCM2018)
  • Int'l Joint Research
• [Presentation] Entanglement Chern Number for Topological Insulators without Inversion Symmetry from First Principles Calculations (2018)
  • Author(s): H. Araki, T. Fukui, and Y. Hatsugai
  • Organizer: 34th International Conference on the Physics of Semiconductors (ICPS2018)
  • Int'l Joint Research
• [Presentation] Topological phase of the strained HgTe from the entanglement Hamiltonians and the first-principles calculations (2018)
  • Author(s): H. Araki, T. Fukui, and Y. Hatsugai
  • Organizer: 23rd International Conference on High Magnetic Fields in Semiconductor Physics (HMF23)
  • Int'l Joint Research
• [Presentation] Topological physics explored by ultracold atoms in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts"[ BEC2018X ]
  • Int'l Joint Research
• [Presentation] 極低温原子で紐解く階層横断エキゾチック物性現象 (2018)
  • Author(s): 高橋 義朗
  • Organizer: 新学術領域「量子クラスターで読み解く物質の階層構造」キックオフシンポジウム
  • Int'l Joint Research
• [Presentation] Dissipative Bose-Hubbard system with metastable 3P2 state of ytterbium atoms (2018)
  • Author(s): Takafumi Tomita, Shuta Nakajima, Yosuke Takasu, Yoshiro Takahashi
  • Organizer: The 26th International Conference on Atomic Physics(ICAP2018)
  • Int'l Joint Research
• [Presentation] Measurement of interorbital spin-exchange interaction of ytterbium atoms (2018)
  • Author(s): Koki Ono, Jun Kobayashi, Yoshiki Amano, Koji Sato, Naoto Oda and Yoshiro Takahashi
  • Organizer: The 26th International Conference on Atomic Physics(ICAP2018)
  • Int'l Joint Research
• [Presentation] Adiabatic and Non-adibatic Dynamics of Ultracold Atoms in an Optical Lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: 国際モレキュール型プログラム「フロケ理論：基礎研究から応用まで」/International Workshop / Symposium on : Floquet Theory : Fundamental and Applications
  • Int'l Joint Research
• [Presentation] Photo-induced surface Dirac states of topological insulators (2018)
  • Author(s): A. Kimura, T. Yoshikawa, K. Sumida, Y. Ishida, J. Chen, M. Nurmamat, K. A. Kokh, O. E. Tereshchenko, and S. Shin
  • Organizer: New Trends in Topological Insulators 2018
  • Int'l Joint Research
• [Presentation] Topologically non-trivial phase change compound GeSb2Te4 (2018)
  • Author(s): M. Nurmamat and A. Kimura
  • Organizer: International workshop on “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Int'l Joint Research
• [Presentation] Spin- and angle-resolved ARPES study on the spin and orbit texture characteristics of the surface-derived states in Dirac nodal line semimetal (2018)
  • Author(s): X.X. Wang, J.H. Chen, M.T. Zheng, T. V. Menshchikova, I. P. Rusinov, E. F. Schwier, F. Orbani_, S.L. Wu, K. Sumida, T. Yoshikawa, K. Miyamoto, M. Nurmamat, T. Okuda, K. Shimada, M. Novak, E. V. Chulkov, and A. Kimura
  • Organizer: International workshop on “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Int'l Joint Research
• [Presentation] Enhanced photovoltage on the surface of topological insulator via optical aging (2018)
  • Author(s): Tomoki Yoshikawa, Kazuki Sumida, Yukiaki Ishida, Jiahua Chen, Munisa Nurmamat, Konstantin A. Kokh, Oleg E. Tereshchenko, Shik Shin, Akio Kimura
  • Organizer: International workshop on “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts
  • Int'l Joint Research
• [Presentation] A bi-directional surface photovoltaic shift on a topological insulator (2018)
  • Author(s): Tomoki Yoshikawa, Kazuki Sumida, Yukiaki Ishida, Jiahua Chen, Munisa Nurmamat, Konstantin A. Kokh, Oleg E. Tereshchenko, Shik Shin, Akio Kimura
  • Organizer: International Workshop on Trends in Advanced Spectroscopy in Materials Science
  • Int'l Joint Research
• [Presentation] Prolonged photocarriers generated in Black phosphorus (2018)
  • Author(s): Munisa Nurmamat, Yukiaki Ishida, Ryohei Yori, Kazuki Sumida, Siyuan Zhu, Masashi Nakatake, Yoshifumi Ueda, Masaki Taniguchi, Shik Shin, Yuichi Akahama, Akio Kimura
  • Organizer: International Workshop on Trends in Advanced Spectroscopy in Materials Science
  • Int'l Joint Research
• [Presentation] Ultrafast carrier dynamics and transient population inversion of the topological insulators (Sb,Bi)2Te3 (2018)
  • Author(s): K. Sumida, Y. Ishida, T. Yoshikawa, J. Chen, M. Nurmamat, K. A. Kokh, O. E. Tereshchenko, S. Shin, A. Kimura
  • Organizer: New Trends in Topological Insulators 2018
  • Int'l Joint Research
• [Presentation] Surface termination and electronic reconstruction in YBa2Cu3O7－δ revealed by micro-ARPES (2018)
  • Author(s): Hideaki Iwasawa, Niels B. M. Schroeter, Takahiko Masui, Setsuko Tajima, Timur K. Kim, and Moritz Hoesch
  • Organizer: International Workshop on Trends in Advanced Spectroscopy in Materials Science
  • Int'l Joint Research
• [Presentation] Angle-resolved Photoemission Study of Co-substitution Effect on High-Tc Cuprate Superconductor (2018)
  • Author(s): Takeo Miyashita, Wumiti Mansuer, Hitoshi Takita, Takuya Kubo, Satoshi Ishizaka, Hideaki Iwasawa, Eike F Schwier, Kenya Shimada, Masashi Arita, Yoshinori Numata, Tatsuro Uto, Azusa Matsuda, Akihiro Ino
  • Organizer: 2018 Japan-Korea Student workshop (Hiroshima University - Pusan National University)
  • Int'l Joint Research
• [Presentation] A bi-directional photovoltaic shift on the surface of topological insulators (2018)
  • Author(s): T. Yoshikawa, K. Sumida, Y. Ishida, J. Chen, M. Nurmamat, K. A. Kokh, O. E. Tereshchenko, S. Shin, A. Kimura
  • Organizer: 2018 Japan-Korea Student workshop (Hiroshima University - Pusan National University)
  • Int'l Joint Research
• [Presentation] 格子上の傾いたディラック電子のダブリングと一般化されたカイラル対称性 (2018)
  • Author(s): 河原林透, 青木秀夫, 初貝安弘
  • Organizer: 日本物理学会２０１８年秋季大会
• [Presentation] 完全バンドギャップを有するGaAsバレーフォノニック結晶の設計 (2018)
  • Author(s): 金仁基，荒川泰彦, 岩本敏
  • Organizer: 第79回応用物理学会秋季講演会
• [Presentation] バレーフォトニック結晶のBearded 界面における低群速度エッジ状態 (2018)
  • Author(s): 岩本敏，太田泰友、吉見拓展, 荒川泰彦
  • Organizer: 第79回応用物理学会秋季講演会
• [Presentation] 急峻曲げを有するスラブ型バレーフォトニック結晶導波路における光伝搬の観測 (2018)
  • Author(s): 山口拓人，勝見亮太，長田有登，太田泰友，石田悟己，荒川 泰彦，岩本敏
  • Organizer: 第79回応用物理学会秋季講演会
• [Presentation] ２次元フォトニック結晶中に形成されたトポロジカルコーナー状態の解析 (2018)
  • Author(s): 太田泰友、岩本敏、荒川泰彦
  • Organizer: 第79回応用物理学会秋季講演会
• [Presentation] Topological properties of ultracold dipolar fermions in a one-dimensional optical lattice (2018)
  • Author(s): 吉田恒也
  • Organizer: BEC 2018
• [Presentation] 強相関ディラック電子系における 非エルミート物性 (2018)
  • Author(s): 吉田恒也、ピータース ロバート、川上則雄
  • Organizer: 日本物理学会秋季大会2018
• [Presentation] Fractional quantum Hall effect of graphene and Chern number matrix (2018)
  • Author(s): 工藤耕司, 初貝安弘
  • Organizer: 科研費基盤研究S(17H06138) 第3回研究会
• [Presentation] 多体チャーン数の収束性について (2018)
  • Author(s): 工藤耕司, 渡辺悠樹,苅宿俊風,初貝安弘
  • Organizer: 日本物理学会2018年秋季大会_
• [Presentation] カゴメ古典スピン液体における境界の効果 (2018)
  • Author(s): 溝口知成, 初貝安弘
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] キタエフハニカム模型におけるマヨラナエッジ状態の磁化 (2018)
  • Author(s): 溝口知成, 高麗徹
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] Topological phase of the strained HgTe from the entanglement Hamiltonians (2018)
  • Author(s): 荒木広夢、福井隆裕、初貝安弘
  • Organizer: Third informal workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts”
• [Presentation] カゴメ格子上のコーナー状態とベリー位相 (2018)
  • Author(s): 荒木広夢、溝口知成、初貝安弘
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 冷却原子量子シミュレーション/Cold atom quantum simulation (2018)
  • Author(s): 高橋 義朗/代理 高須 洋介
  • Organizer: ImPACT山本プログラム_量子情報技術ワークショップ（第五回全体会議）
• [Presentation] 光格子中Yb原子の高分解能観測系の構築/Construction of high resolution imaging system of ytterbium atoms in an optical lattice (2018)
  • Author(s): 奥野 大地, 山下 和也、髙田 佳弘、富田 隆文、武井 宣幸、高橋 義朗
  • Organizer: ImPACT山本プログラム_量子情報技術ワークショップ（第五回全体会議）
• [Presentation] 二軌道系による近藤効果の量子シミュレーションに向けて/Towards quantum simulation of the Kondo effect with two-orbital system (2018)
  • Author(s): 天野 良樹, 小野 滉貴, 小林 淳, 尾田 直人, Florian Schaefer, 高橋 義朗
  • Organizer: ImPACT山本プログラム_量子情報技術ワークショップ（第五回全体会議）
• [Presentation] Towards measurement of quantum metric tensor for ultracold atoms in an optical lattice (2018)
  • Author(s): Keita Sakuma, Noriyuki Takei, Yoshihito Kuno, Yosuke Takasu, Yoshiro Takahashi
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" (BEC2018X)
• [Presentation] 冷却原子の高度制御に基づく革新的光格子量子シミュレーター開発 (2018)
  • Author(s): 高橋 義朗
  • Organizer: CREST「量子状態の高度な制御に基づく革新的量子技術基盤の創出」第3回公開シンポジウム
• [Presentation] Cold Atom Quantum Simulator (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: 日本物理学会2018年秋季大会 領域横断（理事会）60 years of Physical Review Letters（Condensed Matter）American Physical Society
• [Presentation] イッテルビウム原子の2軌道間スピン交換相互作用の測定 (2018)
  • Author(s): 小野滉貴, 小林淳, 天野良樹, 佐藤浩司, 尾田直人, 高橋義朗
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 2次元光超格子中においてSU(N)スピン系が示す短距離量子磁性 (2018)
  • Author(s): 西澤 直樹，田家 慎太郎，八神 智哉，佐久間 啓太，高須 洋介，久野 義人，高橋 義朗
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 強相関ボース気体における空間相関の伝搬に対するSU(3)Truncated-Wigner近似 (2018)
  • Author(s): 長尾一馬, 高須洋介, 高橋義朗, 段下一平
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] ボース・ハバード系における量子相転移をまたぐ急峻なクエンチ後の空間相関の準古典的伝搬 (2018)
  • Author(s): 長尾一馬, 國見昌哉, 高須洋介, 高橋義朗, 段下一平
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 近藤効果の量子シミュレータの開発 (2018)
  • Author(s): 尾田 直人
  • Organizer: ImPACT 未来開拓研究会 ２０１８
• [Presentation] 不純物問題の量子シミュレーターの開発 (2018)
  • Author(s): 水上 尚人
  • Organizer: ImPACT 未来開拓研究会 ２０１８
• [Presentation] 光格子中の単一Yb原子の非破壊測定・制御に向けて (2018)
  • Author(s): 奥野 大地
  • Organizer: ImPACT 未来開拓研究会 ２０１８
• [Presentation] Cold Atoms in Parity-Time-Symmetric Optical Lattices with non-Hermitian Hamiltonian (2018)
  • Author(s): Yosuke Takasu
  • Organizer: Third informal workshop ”Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts”
• [Presentation] Topological physics using ultracold atoms in an optical lattice (2018)
  • Author(s): Yoshiro Takahashi
  • Organizer: Third informal workshop ”Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts”
• [Presentation] トポロジカル四重極相へのエンタングルメント・ベリー位相の応用 (2018)
  • Author(s): 福井隆裕, 初貝安弘
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] Theoretical possibilities for flat-band superconductivity (2018)
  • Author(s): Hideo Aoki
  • Organizer: International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" [BEC2018X]
  • Int'l Joint Research / Invited
• [Book] Advanced Topological Insulators (2019)
  • Author(s): Koji Kobayashi, Tomi Ohtsuki and Ken-Ichiro Imura
  • Total Pages: 414 (pp. 109-158を分担執筆)
  • Publisher: WILEY-Scrivener Publishing
  • ISBN: 978-1119407294
• [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: http://rhodia.ph.tsukuba.ac.jp/~hatsugai/kaken-s.html
• [Remarks] 初貝研究室
  • URL: http://rhodia.ph.tsukuba.ac.jp/~hatsugai
• [Funded Workshop] International workshop "Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" [ BEC2018X ] (2018)