Frontiers in topological material science

• Project/Area Number: 18H03678
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 13:Condensed matter physics and related fields
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Murakami Shuichi 東京工業大学, 理学院, 教授 (30282685)
• Co-Investigator(Kenkyū-buntansha): 平山 元昭 国立研究開発法人理化学研究所, 創発物性科学研究センター, ユニットリーダー (70761005)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥37,700,000 (Direct Cost: ¥29,000,000、Indirect Cost: ¥8,700,000); Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000); Fiscal Year 2020: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000); Fiscal Year 2019: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000); Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
• Keywords: 物性理論 / トポロジカル絶縁体 / トポロジカル半金属 / 第一原理計算 / スピントロニクス / 表面状態 / トポロジー / スピンエレクトロニクス / 磁性

Outline of Final Research Achievements

We constructed fundamental theories of topological phases, such as the theory of crystal shapes of topological crystalline insulators, the theory of quantize corner charges of atomic insulators, and Morse-theory analysis of nodal lines in three dimensions. Furthermore, we proposed the electrides as a new stage of various topological phases. In addition, we proposed the phenomenon of current-induced magnetization in chiral topological insulators, and we proposed some candidate materials for this phenomenon.

Academic Significance and Societal Importance of the Research Achievements

今回構築したトポロジカル相の基礎理論は、それぞれ広い範囲の系に適用できる汎用的なものである。特に非エルミート系でのブロッホ理論は、非エルミート系の基礎定理として認知されるようになり、非エルミート系の理論的理解を格段に進展させた。また電子化物などトポロジカル材料の提案は、今後実験への波及効果が期待できる。さらにトポロジカル相の結晶形状の研究は、結晶形状という観点をトポロジカル相に導入した初めての研究であり、今後研究の深化が期待できる。このように本研究によって電子系でのトポロジカル材料を広げ、その物性に関する理解が深まったと同時に、メタマテリアルなどへの応用も広がったといえる。

Research Products

• [Int'l Joint Research] Oak Ridge National Laboratory/Brookhaven National Laboratory/Argonne National Laboratory(米国)
• [Int'l Joint Research] Chinese Academy of Sciences/Renmin University of China(中国)
• [Int'l Joint Research] Paul Scherrer Institut(スイス)
• [Int'l Joint Research] University of Cambridge(英国)
• [Int'l Joint Research] Oak Ridge National Laboratory/Brookhaven National Laboratory/Argonne National Laboratory(米国)
• [Int'l Joint Research] University of Cambridge(英国)
• [Int'l Joint Research] Institute of Physics/Renmin University of China(中国)
• [Int'l Joint Research] マインツ大学(ドイツ)
• [Journal Article] Polarization jumps by breaking symmetries of two-dimensional Weyl semimetals (2023)
  • Author(s): Yoshida Hiroki、Zhang Tiantian、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 107 Issue: 3 Pages: 035122-035122
  • DOI: 10.1103/physrevb.107.035122
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Truly chiral phonons in α-HgS (2023)
  • Author(s): K. Ishito, H. Mao, Y. Kousaka, Y. Togawa, S. Iwasaki, T. Zhang, S. Murakami, J. Kishine and T. Satoh
  • Journal Title: Nature Physics Volume: 19 Issue: 1 Pages: 35-39
  • DOI: 10.1038/s41567-022-01790-x
  • Peer Reviewed / Open Access
• [Journal Article] Systematic study for two-dimensional Z2 topological phase transitions at high-symmetry points in all layer groups (2023)
  • Author(s): Sasaki Ren、Tanaka Yutaro、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 107 Issue: 11 Pages: 115120-115120
  • DOI: 10.1103/physrevb.107.115120
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Morse theory study on the evolution of nodal lines in PT-symmetric nodal-line semimetals (2023)
  • Author(s): Takeichi Manabu、Furuta Ryo、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 107 Issue: 8 Pages: 085139-085139
  • DOI: 10.1103/physrevb.107.085139
  • Peer Reviewed
• [Journal Article] Fractional hinge and corner charges in various crystal shapes with cubic symmetry (2022)
  • Author(s): Naito Katsuaki、Takahashi Ryo、Watanabe Haruki、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 105 Issue: 4 Pages: 045126-045126
  • DOI: 10.1103/physrevb.105.045126
  • Peer Reviewed / Open Access
• [Journal Article] Chiral phonons and pseudoangular momentum in nonsymmorphic systems (2022)
  • Author(s): Zhang Tiantian、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 4 Issue: 1 Pages: 012024-012024
  • DOI: 10.1103/physrevresearch.4.l012024
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Non-Hermitian waves in a continuous periodic model and application to photonic crystals (2022)
  • Author(s): Yokomizo Kazuki、Yoda Taiki、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 4 Issue: 2 Pages: 023089-023089
  • DOI: 10.1103/physrevresearch.4.023089
  • Peer Reviewed / Open Access
• [Journal Article] Chiral-phonon-induced current in helical crystals (2022)
  • Author(s): Yao Dapeng、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 105 Issue: 18 Pages: 184412-184412
  • DOI: 10.1103/physrevb.105.184412
  • Peer Reviewed
• [Journal Article] Endless Dirac nodal lines in kagome-metal Ni3In2S2 (2022)
  • Author(s): Zhang Tiantian、Yilmaz T.、Vescovo E.、Li H. X.、Moore R. G.、Lee H. N.、Miao H.、Murakami S.、McGuire M. A.
  • Journal Title: npj Computational Materials Volume: 8 Issue: 1 Pages: 155-155
  • DOI: 10.1038/s41524-022-00838-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Anomalous Crystal Shapes of Topological Crystalline Insulators (2022)
  • Author(s): Tanaka Yutaro、Zhang Tiantian、Uwaha Makio、Murakami Shuichi
  • Journal Title: Physical Review Letters Volume: 129 Issue: 4 Pages: 046802-046802
  • DOI: 10.1103/physrevlett.129.046802
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Z2 Dirac points with topologically protected multihelicoid surface states (2022)
  • Author(s): Zhang Tiantian、Hara Daisuke、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 4 Issue: 3 Pages: 033170-033170
  • DOI: 10.1103/physrevresearch.4.033170
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A comprehensive study of complex non-adiabatic exciton dynamics in MoSi2N4 (2022)
  • Author(s): Kong M.、Murakami S.、Zhang T.
  • Journal Title: Materials Today Physics Volume: 27 Pages: 100814-100814
  • DOI: 10.1016/j.mtphys.2022.100814
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Physics of phonons in systems with approximate screw symmetry (2022)
  • Author(s): Komiyama Hisayoshi、Zhang Tiantian、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 106 Issue: 18 Pages: 184104-184104
  • DOI: 10.1103/physrevb.106.184104
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 非エルミート系におけるブロッホバンド理論 (2022)
  • Author(s): 横溝 和樹、村上 修一
  • Journal Title: 日本物理学会誌 Volume: 77 Pages: 293-293
  • NAID: 130008154206
  • Peer Reviewed
• [Journal Article] Rotoinversion-symmetric bulk-hinge correspondence and its applications to higher-order Weyl semimetals (2022)
  • Author(s): Tanaka Yutaro、Takahashi Ryo、Okugawa Ryo、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 105 Issue: 11 Pages: 115119-115119
  • DOI: 10.1103/physrevb.105.115119
  • Peer Reviewed
• [Journal Article] Anisotropic Penetration Depths of Corner States in a Higher-Order Topological Insulator (2021)
  • Author(s): Arai Nobuhiro、Murakami Shuichi
  • Journal Title: Journal of the Physical Society of Japan Volume: 90 Issue: 7 Pages: 074711-074711
  • DOI: 10.7566/jpsj.90.074711
  • Peer Reviewed
• [Journal Article] Observation of Unconventional Charge Density Wave without Acoustic Phonon Anomaly in Kagome Superconductors AV3Sb5 (A=Rb,Cs) (2021)
  • Author(s): Li Haoxiang、Zhang T. T.、Yilmaz T.、Pai Y. Y.、Marvinney C. E.、Said A.、Yin Q. W.、Gong C. S.、Tu Z. J.、Vescovo E.、Nelson C. S.、Moore R. G.、Murakami S.、Lei H. C.、Lee H. N.、Lawrie B. J.、Miao H.
  • Journal Title: Physical Review X Volume: 11 Issue: 3 Pages: 031050-031050
  • DOI: 10.1103/physrevx.11.031050
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Giant phonon anomalies in the proximate Kitaev quantum spin liquid α-RuCl3 (2021)
  • Author(s): Li Haoxiang、Zhang T. T.、Said A.、Fabbris G.、Mazzone D. G.、Yan J. Q.、Mandrus D.、Halasz Gabor B.、Okamoto S.、Murakami S.、Dean M. P. M.、Lee H. N.、Miao H.
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 3513-3513
  • DOI: 10.1038/s41467-021-23826-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] General corner charge formula in two-dimensional Cn-symmetric higher-order topological insulators (2021)
  • Author(s): Takahashi Ryo、Zhang Tiantian、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 103 Issue: 20 Pages: 205123-205123
  • DOI: 10.1103/physrevb.103.205123
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Kinetic magnetoelectric effect in topological insulators (2021)
  • Author(s): Osumi Ken、Zhang Tiantian、Murakami Shuichi
  • Journal Title: Communications Physics Volume: 4 Issue: 1 Pages: 211-211
  • DOI: 10.1038/s42005-021-00702-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Scaling rule for the critical non-Hermitian skin effect (2021)
  • Author(s): Yokomizo Kazuki、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 104 Issue: 16 Pages: 165117-165117
  • DOI: 10.1103/physrevb.104.165117
  • Peer Reviewed
• [Journal Article] Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP (2021)
  • Author(s): Peng Bo、Murakami Shuichi、Monserrat Bartomeu、Zhang Tiantian
  • Journal Title: npj Computational Materials Volume: 7 Issue: 1 Pages: 195-195
  • DOI: 10.1038/s41524-021-00667-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Unique surface-state connection between Weyl and nodal ring fermions in ferromagnetic material Cs2MoCl6 (2021)
  • Author(s): Zhang Tiantian、Hara Daisuke、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 3 Issue: 4
  • DOI: 10.1103/physrevresearch.3.l042037
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Observation of a chiral wave function in the twofold-degenerate quadruple Weyl system BaPtGe (2021)
  • Author(s): Li Haoxiang、Zhang Tiantian、Said A.、Fu Y.、Fabbris G.、Mazzone D. G.、Zhang J.、Lapano J.、Lee H. N.、Lei H. C.、Dean M. P. M.、Murakami S.、Miao H.
  • Journal Title: Physical Review B Volume: 103 Issue: 18 Pages: 184301-184301
  • DOI: 10.1103/physrevb.103.184301
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Non-Bloch band theory in bosonic Bogoliubov?de Gennes systems (2021)
  • Author(s): Yokomizo Kazuki、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 103 Issue: 16 Pages: 165123-165123
  • DOI: 10.1103/physrevb.103.165123
  • Peer Reviewed
• [Journal Article] Theoretical analysis of glide-Z2 magnetic topological photonic crystals (2021)
  • Author(s): Kim Heejae、Cheng Hengbin、Lu Ling、Murakami Shuichi
  • Journal Title: Optics Express Volume: 29 Issue: 20 Pages: 31164-31164
  • DOI: 10.1364/oe.439590
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] キラルな結晶構造を有するテルル単体におけるスピン偏極したバンド構造 (2021)
  • Author(s): 坂野昌人，平山元昭，笹川崇男，近藤猛
  • Journal Title: 放射光 Volume: 34 Pages: 235-241
  • NAID: 40022667538
  • Peer Reviewed
• [Journal Article] Predicting topological materials: symmetry-based indicator theories and beyond (2021)
  • Author(s): Zhang Tiantian、Murakami Shuichi
  • Journal Title: Journal of Physics D: Applied Physics Volume: 54 Issue: 41 Pages: 414002-414002
  • DOI: 10.1088/1361-6463/ac13f4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Higher-order topological crystalline insulating phase and quantized hinge charge in topological electride apatite (2020)
  • Author(s): Hirayama Motoaki、Takahashi Ryo、Matsuishi Satoru、Hosono Hideo、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 2 Issue: 4 Pages: 043131-043131
  • DOI: 10.1103/physrevresearch.2.043131
  • Peer Reviewed / Open Access
• [Journal Article] Anomalous dielectric response in insulators with the π Zak phase (2020)
  • Author(s): Aihara Yusuke、Hirayama Motoaki、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 2 Issue: 3 Pages: 033224-033224
  • DOI: 10.1103/physrevresearch.2.033224
  • Peer Reviewed / Open Access
• [Journal Article] Berry curvature for magnetoelastic waves (2020)
  • Author(s): Okamoto Akihiro、Murakami Shuichi、Everschor-Sitte Karin
  • Journal Title: Physical Review B Volume: 101 Issue: 6 Pages: 064424-064424
  • DOI: 10.1103/physrevb.101.064424
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Appearance of hinge states in second-order topological insulators via the cutting procedure (2020)
  • Author(s): Tanaka Yutaro、Takahashi Ryo、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 101 Issue: 11 Pages: 1-16
  • DOI: 10.1103/physrevb.101.115120
  • Peer Reviewed
• [Journal Article] Bulk-edge and bulk-hinge correspondence in inversion-symmetric insulators (2020)
  • Author(s): Takahashi Ryo、Tanaka Yutaro、Murakami Shuichi
  • Journal Title: Physical Review Research Volume: 2 Issue: 1 Pages: 1-20
  • DOI: 10.1103/physrevresearch.2.013300
  • Peer Reviewed / Open Access
• [Journal Article] Radial spin texture in elemental tellurium with chiral crystal structure (2020)
  • Author(s): M. Sakano, M. Hirayama, T. Takahashi, S. Akebi, M. Nakayama, K. Kuroda, K. Taguchi, T. Yoshikawa, K. Miyamoto, T. Okuda, K. Ono, H. Kumigashira, T. Ideue, Y. Iwasa, N. Mitsuishi, K. Ishizaka, S. Shin, T. Miyake, S. Murakami, T. Sasagawa, and Takeshi Kondo
  • Journal Title: Phys. Rev. Lett. Volume: 124 Issue: 13 Pages: 136404-136409
  • DOI: 10.1103/physrevlett.124.136404
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Topological band structure of surface acoustic waves on a periodically corrugated surface (2019)
  • Author(s): Inoue Tomohiro、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 99 Issue: 19 Pages: 195443-195443
  • DOI: 10.1103/physrevb.99.195443
  • Peer Reviewed
• [Journal Article] Non-Bloch Band Theory of Non-Hermitian Systems (2019)
  • Author(s): Yokomizo Kazuki、Murakami Shuichi
  • Journal Title: Physical Review Letters Volume: 123 Issue: 6 Pages: 066404-066409
  • DOI: 10.1103/physrevlett.123.066404
  • Peer Reviewed
• [Journal Article] Topological linelike bound states in the continuum (2019)
  • Author(s): Takeichi Manabu、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 99 Issue: 3 Pages: 035128-035128
  • DOI: 10.1103/physrevb.99.035128
  • Peer Reviewed
• [Journal Article] Topological semimetal phases manifested in transition metal dichalcogenides intercalated with 3d metals (2019)
  • Author(s): Inoshita Takeshi、Hirayama Motoaki、Hamada Noriaki、Hosono Hideo、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 100 Issue: 12 Pages: 121112-121112
  • DOI: 10.1103/physrevb.100.121112
  • Peer Reviewed
• [Journal Article] Glide-symmetric magnetic topological crystalline insulators with inversion symmetry (2019)
  • Author(s): Kim Heejae、Shiozaki Ken、Murakami Shuichi
  • Journal Title: Physical Review B Volume: 100 Issue: 16 Pages: 1-23
  • DOI: 10.1103/physrevb.100.165202
  • Peer Reviewed
• [Journal Article] Pressure-induced topological phase transition in noncentrosymmetric elemental tellurium (2019)
  • Author(s): Toshiya Ideue, Motoaki Hirayama, Hiroaki Taiko, Takanari Takahashi, Masayuki Murase, Takashi Miyake, Shuichi Murakami, Takao Sasagawa, Yoshihiro Iwasa
  • Journal Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 116 Issue: 51 Pages: 25530-25534
  • DOI: 10.1073/pnas.1905524116
  • Peer Reviewed
• [Journal Article] Nodal-line semimetal superlattices (2018)
  • Author(s): Yokomizo Kazuki、Yamada Hiroaki、Murakami Shuichi
  • Journal Title: Journal of Physics: Condensed Matter Volume: 30 Issue: 50 Pages: 505301-505301
  • DOI: 10.1088/1361-648x/aaeabe
  • Peer Reviewed / Open Access
• [Journal Article] Electrides as a New Platform of Topological Materials (2018)
  • Author(s): Hirayama Motoaki、Matsuishi Satoru、Hosono Hideo、Murakami Shuichi
  • Journal Title: Physical Review X Volume: 8 Issue: 3 Pages: 031067-031067
  • DOI: 10.1103/physrevx.8.031067
  • NAID: 130008146203
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Theory of phonon angular momentum and its conversion into electron spins (2023)
  • Author(s): 村上修一
  • Organizer: Iwate Univ. spintronics workshop
  • Int'l Joint Research / Invited
• [Presentation] Theory of generation and conversion of phonon angular momenta (2023)
  • Author(s): 村上修一
  • Organizer: ATI 3rd Spintronics Workshop
  • Invited
• [Presentation] Topological semimetals, topological phase transitions, and candidate materials (2023)
  • Author(s): 村上修一
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research / Invited
• [Presentation] Fractional quantized corner charges in 2D and 3D obstructed atomic insulators (2023)
  • Author(s): 村上修一
  • Organizer: Theoretical studies of topological phases of matter
  • Int'l Joint Research / Invited
• [Presentation] 多面体結晶形状での高次トポロジカル絶縁体の量子化コーナー電荷 (2022)
  • Author(s): 村上修一
  • Organizer: 新学術領域研究「次世代物質探索のための離散幾何学」 領域会議
• [Presentation] Non-Bloch Band Theory and Topology in Non-Hermitian Systems (2022)
  • Author(s): 村上修一
  • Organizer: Topological Quantum Electrons Interacting in-person
  • Int'l Joint Research / Invited
• [Presentation] Kinetic magnetoelectric effect in chiral topological insulators (2022)
  • Author(s): 村上修一
  • Organizer: META 2022
  • Int'l Joint Research / Invited
• [Presentation] Corner and hinge charges of obstructed atomic insulators (2022)
  • Author(s): 村上修一
  • Organizer: CT.QMAT22
  • Int'l Joint Research / Invited
• [Presentation] Theory of current-induced and chiral-phonon-induced magnetizations (in low-symmetry systems) (2022)
  • Author(s): 村上修一
  • Organizer: SpinArgentina
  • Int'l Joint Research / Invited
• [Presentation] Theory of current-induced orbital magnetization in chiral metals and topological insulators (2022)
  • Author(s): 村上修一
  • Organizer: Online seminar series on the CISS effect
  • Int'l Joint Research / Invited
• [Presentation] Theory of kinetic magnetoelectric effect in chiral metals and topological insulators (2022)
  • Author(s): 村上修一
  • Organizer: 775 Wilhelm und Else Heraeus seminar: Towards comprehension of the chiral induced spin selectivity
  • Int'l Joint Research
• [Presentation] カイラル結晶での電流/磁化/カイラルフォノン相互変換の理論 (2022)
  • Author(s): 村上修一
  • Organizer: カイラル物質科学の新展開
  • Invited
• [Presentation] トポロジカル物質概論：現状と展望 (2021)
  • Author(s): 村上修一
  • Organizer: 第245 回 ＪＯＥＭ研究会「トポロジカル絶縁体」
  • Invited
• [Presentation] Bloch Band Theory for Non-Hermitian Systems (2021)
  • Author(s): 村上修一
  • Organizer: YITP workshop YITP-W-21-11"Theoretical studies of topological phases of matter“
  • Int'l Joint Research / Invited
• [Presentation] 非エルミート系のブロッホ理論とトポロジー (2021)
  • Author(s): 村上修一
  • Organizer: 京都大学物理学第一教室談話会
  • Invited
• [Presentation] New horizons of topological materials (2021)
  • Author(s): 村上修一
  • Organizer: NIMS Week
  • Int'l Joint Research / Invited
• [Presentation] Kinetic magnetoelectric effect in topological insulators (2021)
  • Author(s): 村上修一
  • Organizer: 722. WE-Heraeus-Seminar "Hybrid Solid State Quantum Circuits, Sensors, and Metrology"
  • Int'l Joint Research / Invited
• [Presentation] カイラル結晶でのカイラル輸送現象と物質への応用 (2021)
  • Author(s): 村上修一
  • Organizer: 日本物理学会年次大会
• [Presentation] Generalized corner-charge formula in higher-order topological insulators and its application to one-dimensional electrides (2021)
  • Author(s): 村上修一
  • Organizer: APS March Meeting 2021
  • Int'l Joint Research
• [Presentation] Theoretical approaches to topological materials (2021)
  • Author(s): 村上修一
  • Organizer: The 4th Symposium for The Core Research Cluster for Materials Science and the 3rd Symposium on International Joint Graduate Program in Materials Science,
  • Int'l Joint Research / Invited
• [Presentation] Spectral flows and surface terminations in higher-order topological insulators (2020)
  • Author(s): 村上修一
  • Organizer: Recent Developments on Multipole Moments in Quantum Systems
  • Int'l Joint Research / Invited
• [Presentation] Axion insulators and topological chiral hinge states protected by inversion symmetry (2020)
  • Author(s): 村上修一
  • Organizer: CORRELATED ELECTRONS VIRTUAL INTERNATIONAL SEMINARS (CEVIS)
  • Int'l Joint Research / Invited
• [Presentation] Theoretical approaches to topological materials (2020)
  • Author(s): 村上修一
  • Organizer: CEMS colloquium
  • Int'l Joint Research / Invited
• [Presentation] Topological materials and higher-order topological materials (2020)
  • Author(s): 村上修一
  • Organizer: 2nd IIT Guwahati and TokyoTech Joint Workshop onCondensed Matter and High Energy Physics
  • Int'l Joint Research / Invited
• [Presentation] Generations and conversions of phonon angular momenta (2020)
  • Author(s): Shuichi Murakami
  • Organizer: New Perspective in Spin Conversion Science
  • Int'l Joint Research / Invited
• [Presentation] Higher-order topological crystalline insulating phase in topological electride apatite (2020)
  • Author(s): Shuichi Murakami
  • Organizer: The 2nd Annual symposium in the Tokyo Tech-UCL-McGill Core-to-Core collaboration Defect Functionalized Sustainable Energy Materials:From Design to Devices Application
  • Int'l Joint Research / Invited
• [Presentation] Spectral flows and surface terminations in higher-order topological insulators (2020)
  • Author(s): Shuichi Murakami
  • Organizer: Recent Developments on Multipole Moments in Quantum Systems
  • Int'l Joint Research / Invited
• [Presentation] Bloch Band Theory for Non-Hermitian Systems (2019)
  • Author(s): Shuichi Murakami
  • Organizer: NTTI2019 and BEC 2019
  • Int'l Joint Research / Invited
• [Presentation] New Horizons of Topological Material Science (2019)
  • Author(s): Shuichi Murakami
  • Organizer: SSDM 2019
  • Int'l Joint Research / Invited
• [Presentation] Theory of generation and conversion of phonon angular momenta (2019)
  • Author(s): Shuichi Murakami
  • Organizer: SpinPeru
  • Int'l Joint Research / Invited
• [Presentation] New Horizons of Topological Material Science (2019)
  • Author(s): Shuichi Murakami
  • Organizer: TokyoTech and IIT Guwahati Joint Workshop Condensed Matter and High-Energy Physics
  • Int'l Joint Research / Invited
• [Presentation] Anomalous dielectric response in insulators with the pi Zak phase (2019)
  • Author(s): Shuichi Murakami
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] トポロジカル材料科学の現状と展開 (2019)
  • Author(s): 村上修一
  • Organizer: 第７３回 超精密加工専門委員会 研究会 「量子力学の世界が織りなす物理の深淵とその応用」
  • Invited
• [Presentation] Topological phases in condensed matter (2019)
  • Author(s): Shuichi Murakami
  • Organizer: Tokyo Institute of Technology and Stony Brook University Joint Science and Technology Meeting (TokyoTech-SBU meeting 2019)
  • Int'l Joint Research / Invited
• [Presentation] Bloch Band Theory for Non-Hermitian Systems (2019)
  • Author(s): Shuichi Murakami
  • Organizer: New Trends in Topological Insulators 2019 and Variety and Universality of Bulk-Edge Correspondence in Topological Phases 2019
  • Int'l Joint Research / Invited
• [Presentation] New Horizons of Topological Material Science (2019)
  • Author(s): Shuichi Murakami
  • Organizer: SSDM2019 (2019 Internatinoal Conference on Solid State Devices and Materials)
  • Int'l Joint Research / Invited
• [Presentation] New routes to topological materials (2019)
  • Author(s): Shuichi Murakami
  • Organizer: The 380th ZhongGuanCun Forum
  • Int'l Joint Research / Invited
• [Presentation] Anomalous dielectric response in insulators with the p Zak phase (2019)
  • Author(s): Shuichi Murakami
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Electrides as a New Platform of Topological Materials (2019)
  • Author(s): M. Hirayama, S. Matsuishi, H. Hosono, and S. Murakami
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] トポロジカル物質の新たな舞台としての電子化物 (2019)
  • Author(s): 平山元昭，松石聡，細野秀雄，村上修一
  • Organizer: 日本物理学会 第74回年次大会
• [Presentation] 第一原理手法を用いたトポロジカル系の理論研究と材料提案 (2019)
  • Author(s): 平山元昭
  • Organizer: 日本物理学会 第74回年次大会
  • Invited
• [Presentation] 第一原理計算によるトポロジカル材料開拓 (2018)
  • Author(s): 平山元昭
  • Organizer: 元素戦略研究センターセミナー
  • Invited
• [Presentation] 第一原理計算による新しいトポロジカル半金属相の開拓 (2018)
  • Author(s): 平山元昭
  • Organizer: 日本物理学会2018年秋季大会
  • Invited
• [Presentation] 対称性の観点からの第一原理トポロジカル物質探索 (2018)
  • Author(s): 平山元昭
  • Organizer: 物質のトポロジカル相の理論的探究