Electronic nematic phase under the breaking of time-reversal, spatial inversion, and gauge symmetries

• Project Area: Physical Properties of Quantum Liquid Crystals
• Project/Area Number: 22H04468
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hokkaido University
• Principal Investigator: 速水 賢 北海道大学, 理学研究院, 准教授 (20776546)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 電子液晶相 / 電気トロイダル双極子 / フェロアキシャルモーメント / 非線形応答 / ホール効果 / 磁気抵抗効果 / 相転移 / スカラースピンカイラリティ / 空間反転対称性 / 時間反転対称性 / ゲージ対称性 / 多極子 / 磁気トロイダル四極子 / スピン流生成 / スピン分裂バンド / 非線形磁化 / 非対角応答 / 反対称熱分極

Outline of Research at the Start

自発的な回転対称性の破れにより発現する電子液晶相は、磁性・誘電性・超伝導といった多彩な物性の発現や機能に大きく影響を与える。本研究では、従来の自発的な回転対称性の破れに加えて、時間・空間反転、ゲージ、鏡映対称性といった様々な対称性の破れが生じた際に現れる量子伝導現象やマルチフェロイクス応答現象に関する理論形式を構築することである。これを達成することにより、電子液晶相が示す新しい機能物性を開拓する。

Outline of Annual Research Achievements

固体中での電子のミクロな自由度を表現する多極子は、多彩な電子秩序相や物性現象を理解する上での基礎的枠組みを与える。本研究の目的は、こうした多極子自由度の概念を電子液晶に拡張し、さらに電子対自由度を表現論に組み込むことで、時間・空間反転およびゲージ対称性の破れた電荷・スピン・電子対液晶相の理論形式をミクロな多極子の立場から構築することである。 本年度は、鏡映対称性の破れた系において発現する電子秩序相であるフェロアキシャル秩序相に対する解析を重点的に行った。フェロアキシャル秩序相の秩序変数は時間反転偶でランク1の軸性ベクトルである電気トロイダル双極子自由度に相当しており、回転および鏡映操作に関するパリティが従来の電子液晶相のものと異なるため、それに起因した物性現象が期待される。その中でもフェロアキシャル秩序下における非線形磁気歪み応答のミクロな機構に関する理論模型の解析を行った。その結果、電気トロイダル双極子モーメントの活性に伴って、磁場の2次に比例する特異な歪み応答が現れることを明らかにした。これらの解析は、あらゆるフェロアキシャル物質の検出に使用できることから、広い物質群に対するさらなる展開が期待される。その他にも、(1) ジグザグ鎖構造のもとで誘起される一様および交替的なフェロアキシャルモーメントの理論、(2) フェロアキシャル秩序系における非従来型ホール効果と磁気抵抗効果の解析、(3) 三角格子上における多重Q双極子-四極子秩序の解析、(4) ジャロシンスキー・守谷相互作用のない磁性体における3副格子磁気スキルミオン結晶相の発現に関する理論提案、(5) 円偏光電場照射により誘起されるスカラースピンカイラリティを伴う磁性体の発現に関する理論提案、 (6) フロッケ理論に基づいた光誘起カイラリティおよび磁気トロイダルモーメントの理論に関する論文出版を行った。

Research Progress Status

令和5年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和5年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Three-sublattice antiferro-type and ferri-type skyrmion crystals in magnets without the Dzyaloshinskii-Moriya interaction (2024)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 109 Issue: 1 Pages: 014415-014415
  • DOI: 10.1103/physrevb.109.014415
  • Peer Reviewed
• [Journal Article] Hybrid skyrmion and antiskyrmion phases in polar C4v systems (2024)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 109 Issue: 5 Pages: 054422-054422
  • DOI: 10.1103/physrevb.109.054422
  • Peer Reviewed
• [Journal Article] Scalar spin chirality induced by a circularly polarized electric field in a classical kagome magnet (2024)
  • Author(s): Yambe Ryota、Hayami Satoru
  • Journal Title: Physical Review B Volume: 109 Issue: 6 Pages: 064428-064428
  • DOI: 10.1103/physrevb.109.064428
  • Peer Reviewed
• [Journal Article] Analysis of Photo-Induced Chirality and Magnetic Toroidal Moment Based on Floquet Formalism (2024)
  • Author(s): Hayami Satoru、Yambe Ryota、Kusunose Hiroaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 93 Issue: 4 Pages: 043702-043702
  • DOI: 10.7566/jpsj.93.043702
  • Peer Reviewed / Open Access
• [Journal Article] Effect of In-Plane Magnetic Field on Skyrmions in a Centrosymmetric Triangular-Lattice System with Symmetric Anisotropic Exchange Interaction (2024)
  • Author(s): Hayami Satoru
  • Journal Title: Magnetism Volume: 4 Issue: 1 Pages: 54-72
  • DOI: 10.3390/magnetism4010005
  • Peer Reviewed
• [Journal Article] Microscopic mechanism for intrinsic nonlinear anomalous Hall conductivity in noncollinear antiferromagnetic metals (2023)
  • Author(s): Kirikoshi Akimitsu、Hayami Satoru
  • Journal Title: Physical Review B Volume: 107 Issue: 15 Pages: 155109-155109
  • DOI: 10.1103/physrevb.107.155109
  • Peer Reviewed
• [Journal Article] Anisotropic spin model and multiple- Q states in cubic systems (2023)
  • Author(s): Yambe Ryota、Hayami Satoru
  • Journal Title: Physical Review B Volume: 107 Issue: 17 Pages: 174408-174408
  • DOI: 10.1103/physrevb.107.174408
  • Peer Reviewed
• [Journal Article] Symmetry-adapted modeling for molecules and crystals (2023)
  • Author(s): Kusunose Hiroaki、Oiwa Rikuto、Hayami Satoru
  • Journal Title: Physical Review B Volume: 107 Issue: 19 Pages: 195118-195118
  • DOI: 10.1103/physrevb.107.195118
  • Peer Reviewed / Open Access
• [Journal Article] Field direction dependent skyrmion crystals in noncentrosymmetric cubic magnets (2023)
  • Author(s): Hayami Satoru、Yambe Ryota
  • Journal Title: Physical Review B Volume: 107 Issue: 17 Pages: 174435-174435
  • DOI: 10.1103/physrevb.107.174435
  • Peer Reviewed
• [Journal Article] Antiferro Skyrmion Crystal Phases in a Synthetic Bilayer Antiferromagnet under an In-Plane Magnetic Field (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 8 Pages: 084702-084702
  • DOI: 10.7566/jpsj.92.084702
  • Peer Reviewed
• [Journal Article] Magnetic bubble crystal in tetragonal magnets (2023)
  • Author(s): Hayami Satoru、Kato Yasuyuki
  • Journal Title: Physical Review B Volume: 108 Issue: 2 Pages: 024426-024426
  • DOI: 10.1103/physrevb.108.024426
  • Peer Reviewed
• [Journal Article] Symmetry analysis of light-induced magnetic interactions via Floquet engineering (2023)
  • Author(s): Yambe Ryota、Hayami Satoru
  • Journal Title: Physical Review B Volume: 108 Issue: 6 Pages: 064420-064420
  • DOI: 10.1103/physrevb.108.064420
  • Peer Reviewed
• [Journal Article] Unconventional Hall effect and magnetoresistance induced by metallic ferroaxial ordering (2023)
  • Author(s): Hayami Satoru、Oiwa Rikuto、Kusunose Hiroaki
  • Journal Title: Physical Review B Volume: 108 Issue: 8 Pages: 085124-085124
  • DOI: 10.1103/physrevb.108.085124
  • Peer Reviewed / Open Access
• [Journal Article] Checkerboard bubble lattice formed by octuple-period quadruple-Q spin density waves (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 108 Issue: 9 Pages: 094415-094415
  • DOI: 10.1103/physrevb.108.094415
  • Peer Reviewed
• [Journal Article] Checkerboard bubble lattice formed by octuple-period quadruple-Q spin density waves (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 108 Issue: 9 Pages: 094416-094416
  • DOI: 10.1103/physrevb.108.094416
  • Peer Reviewed
• [Journal Article] Uniform and staggered electric axial moment in a zigzag chain (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 108 Issue: 9 Pages: 094106-094106
  • DOI: 10.1103/physrevb.108.094106
  • Peer Reviewed
• [Journal Article] Time-reversal switching responses in antiferromagnets (2023)
  • Author(s): Hayami Satoru、Kusunose Hiroaki
  • Journal Title: Physical Review B Volume: 108 Issue: 14
  • DOI: 10.1103/physrevb.108.l140409
  • Peer Reviewed / Open Access
• [Journal Article] Chiral Charge as Hidden Order Parameter in URu₂Si₂ (2023)
  • Author(s): Hayami Satoru、Kusunose Hiroaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 11 Pages: 113704-113704
  • DOI: 10.7566/jpsj.92.113704
  • Peer Reviewed / Open Access
• [Journal Article] Rotational Response Induced by Electric Toroidal Dipole (2023)
  • Author(s): Kirikoshi Akimitsu、Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 12 Pages: 123703-123703
  • DOI: 10.7566/jpsj.92.123703
  • Peer Reviewed
• [Journal Article] Multiple-q Dipole-Quadrupole Instability in Spin-1 Triangular-lattice Systems (2023)
  • Author(s): Hayami Satoru、Hattori Kazumasa
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 12 Pages: 124709-124709
  • DOI: 10.7566/jpsj.92.124709
  • Peer Reviewed
• [Journal Article] Stacking-dependent nonreciprocal transport in magnetic skyrmions (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 568 Pages: 170420-170420
  • DOI: 10.1016/j.jmmm.2023.170420
  • Peer Reviewed
• [Journal Article] Ferrochiral, antiferrochiral, and ferrichiral skyrmion crystals in an itinerant honeycomb magnet (2023)
  • Author(s): Yambe Ryota、Hayami Satoru
  • Journal Title: Physical Review B Volume: 107 Issue: 1 Pages: 014417-014417
  • DOI: 10.1103/physrevb.107.014417
  • Peer Reviewed
• [Journal Article] Multiple-Q instability under fourth-order inplane single-ion anisotropy (2023)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 570 Pages: 170507-170507
  • DOI: 10.1016/j.jmmm.2023.170507
  • Peer Reviewed
• [Journal Article] Widely-sweeping magnetic field?temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets (2023)
  • Author(s): Hayami Satoru、Kato Yasuyuki
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 571 Pages: 170547-170547
  • DOI: 10.1016/j.jmmm.2023.170547
  • Peer Reviewed
• [Journal Article] Cluster Toroidal Multipoles Formed by Electric-Quadrupole and Magnetic-Octupole Trimers: A Possible Scenario for Hidden Orders in Ca5Ir3O12 (2023)
  • Author(s): Hayami Satoru、Tsutsui Satoshi、Hanate Hiroki、Nagasawa Nobumoto、Yoda Yoshitaka、Matsuhira Kazuyuki
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 3 Pages: 033702-033702
  • DOI: 10.7566/jpsj.92.033702
  • Peer Reviewed
• [Journal Article] Nonlinear Transverse Magnetic Susceptibility under Electric Toroidal Dipole Ordering (2023)
  • Author(s): Inda Akane、Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 92 Issue: 4 Pages: 043702-043702
  • DOI: 10.7566/jpsj.92.043701
  • Peer Reviewed
• [Journal Article] ミクロな多極子による電子物性の表現論 (その9) (2023)
  • Author(s): 速水 賢，大岩 陸人, 八城 愛美，柳 有起，楠瀬 博明
  • Journal Title: 固体物理 Volume: 58(1) Pages: 11-30
  • Peer Reviewed
• [Journal Article] Analysis of model-parameter dependences on the second-order nonlinear conductivity in PT-symmetric collinear antiferromagnetic metals with magnetic toroidal moment (2022)
  • Author(s): Yatsushiro Megumi、Oiwa Rikuto、Kusunose Hiroaki、Hayami Satoru
  • Journal Title: Physical Review B Volume: 105 Issue: 15 Pages: 155157-155157
  • DOI: 10.1103/physrevb.105.155157
  • Peer Reviewed
• [Journal Article] Spin Conductivity Based on Magnetic Toroidal Quadrupole Hidden in Antiferromagnets (2022)
  • Author(s): Hayami Satoru、Yatsushiro Megumi
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 6 Pages: 063702-063702
  • DOI: 10.7566/jpsj.91.063702
  • Peer Reviewed
• [Journal Article] Multifarious skyrmion phases on a trilayer triangular lattice (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 105 Issue: 18 Pages: 184426-184426
  • DOI: 10.1103/physrevb.105.184426
  • Peer Reviewed
• [Journal Article] Rectangular and square skyrmion crystals on a centrosymmetric square lattice with easy-axis anisotropy (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 105 Issue: 17 Pages: 174437-174437
  • DOI: 10.1103/physrevb.105.174437
  • Peer Reviewed
• [Journal Article] Antisymmetric thermopolarization by electric toroidicity (2022)
  • Author(s): Nasu Joji、Hayami Satoru
  • Journal Title: Physical Review B Volume: 105 Issue: 24 Pages: 245125-245125
  • DOI: 10.1103/physrevb.105.245125
  • Peer Reviewed
• [Journal Article] Skyrmion crystal with integer and fractional skyrmion numbers in a nonsymmorphic lattice structure with the screw axis (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 105 Issue: 22 Pages: 224411-224411
  • DOI: 10.1103/physrevb.105.224411
  • Peer Reviewed
• [Journal Article] Skyrmion crystal under D3h point group: Role of out-of-plane Dzyaloshinskii-Moriya interaction (2022)
  • Author(s): Hayami Satoru、Yambe Ryota
  • Journal Title: Physical Review B Volume: 105 Issue: 22 Pages: 224423-224423
  • DOI: 10.1103/physrevb.105.224423
  • Peer Reviewed
• [Journal Article] Square skyrmion crystal in centrosymmetric systems with locally inversion-asymmetric layers (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of Physics: Condensed Matter Volume: 34 Issue: 36 Pages: 365802-365802
  • DOI: 10.1088/1361-648x/ac7bcb
  • Peer Reviewed
• [Journal Article] Nonlinear spin Hall effect in PT-symmetric collinear magnets (2022)
  • Author(s): Hayami Satoru、Yatsushiro Megumi、Kusunose Hiroaki
  • Journal Title: Physical Review B Volume: 106 Issue: 2 Pages: 024405-024405
  • DOI: 10.1103/physrevb.106.024405
  • Peer Reviewed
• [Journal Article] Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling (2022)
  • Author(s): Hayami Satoru、Yatsushiro Megumi
  • Journal Title: Physical Review B Volume: 106 Issue: 1 Pages: 014420-014420
  • DOI: 10.1103/physrevb.106.014420
  • Peer Reviewed
• [Journal Article] Stability of Skyrmion Crystal Phase in Centrosymmetric Distorted Triangular-Lattice Antiferromagnets (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 9 Pages: 093701-093701
  • DOI: 10.7566/jpsj.91.093701
  • Peer Reviewed
• [Journal Article] Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal (2022)
  • Author(s): Okumura Shun、Hayami Satoru、Kato Yasuyuki、Motome Yukitoshi
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 9 Pages: 093702-093702
  • DOI: 10.7566/jpsj.91.093702
  • Peer Reviewed
• [Journal Article] Nonreciprocal Transport in Noncoplanar Magnetic Systems without Spin-Orbit Coupling, Net Scalar Chirality, or Magnetization (2022)
  • Author(s): Hayami Satoru、Yatsushiro Megumi
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 9 Pages: 094704-094704
  • DOI: 10.7566/jpsj.91.094704
  • Peer Reviewed
• [Journal Article] Mean-Field Study of Antiferromagnetic and Antiferroquadrupolar Orderings in Tetragonal CeCoSi (2022)
  • Author(s): Yatsushiro Megumi、Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 10 Pages: 104701-104701
  • DOI: 10.7566/jpsj.91.104701
  • Peer Reviewed
• [Journal Article] Engineering a Skyrmion Crystal in Ferromagnetic/Antiferromagnetic Bilayers Based on Magnetic Frustration Mechanism (2022)
  • Author(s): Okigami Kazuki、Yambe Ryota、Hayami Satoru
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 10 Pages: 103701-103701
  • DOI: 10.7566/jpsj.91.103701
  • Peer Reviewed
• [Journal Article] Ferroaxial moment induced by vortex spin texture (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Physical Review B Volume: 106 Issue: 14 Pages: 144402-144402
  • DOI: 10.1103/physrevb.106.144402
  • Peer Reviewed
• [Journal Article] Electric Ferro-Axial Moment as Nanometric Rotator and Source of Longitudinal Spin Current (2022)
  • Author(s): Hayami Satoru、Oiwa Rikuto、Kusunose Hiroaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 11 Pages: 113702-113702
  • DOI: 10.7566/jpsj.91.113702
  • Peer Reviewed
• [Journal Article] Skyrmion and vortex crystals in the Hubbard model (2022)
  • Author(s): Kobayashi Kaito、Hayami Satoru
  • Journal Title: Physical Review B Volume: 106 Issue: 14
  • DOI: 10.1103/physrevb.106.l140406
  • Peer Reviewed
• [Journal Article] Zero-field skyrmion, meron, and vortex crystals in centrosymmetric hexagonal magnets (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 564 Pages: 170036-170036
  • DOI: 10.1016/j.jmmm.2022.170036
  • Peer Reviewed
• [Journal Article] Magnetic Toroidal Moment under Partial Magnetic Order in Hexagonal Zigzag-Chain Compound Ce3TiBi5 (2022)
  • Author(s): Hayami Satoru、Kusunose Hiroaki
  • Journal Title: Journal of the Physical Society of Japan Volume: 91 Issue: 12 Pages: 123701-123701
  • DOI: 10.7566/jpsj.91.123701
  • Peer Reviewed
• [Journal Article] Effective spin model in momentum space: Toward a systematic understanding of multiple-Q instability by momentum-resolved anisotropic exchange interactions (2022)
  • Author(s): Yambe Ryota、Hayami Satoru
  • Journal Title: Physical Review B Volume: 106 Issue: 17 Pages: 174437-174437
  • DOI: 10.1103/physrevb.106.174437
  • Peer Reviewed
• [Journal Article] Orthorhombic distortion and rectangular skyrmion crystal in a centrosymmetric tetragonal host (2022)
  • Author(s): Hayami Satoru
  • Journal Title: Journal of Physics: Materials Volume: 6 Issue: 1 Pages: 014006-014006
  • DOI: 10.1088/2515-7639/acab89
  • Peer Reviewed
• [Journal Article] Generalization of microscopic multipoles and cross-correlated phenomena by their orderings (2022)
  • Author(s): Kusunose Hiroaki、Hayami Satoru
  • Journal Title: Journal of Physics: Condensed Matter Volume: 34 Issue: 46 Pages: 464002-464002
  • DOI: 10.1088/1361-648x/ac9209
  • Peer Reviewed
• [Journal Article] 磁場方向に敏感なナノスケール磁気スキルミオン結晶の安定化機構 (2022)
  • Author(s): 速水 賢，山家 椋太
  • Journal Title: 固体物理 Volume: 57(4) Pages: 281-291
  • Peer Reviewed
• [Presentation] フェロアキシャル秩序下における非線形磁気歪み応答 (2024)
  • Author(s): 桐越 研光, 速水 賢
  • Organizer: 日本物理学会2024年春季大会
• [Presentation] 円偏光電場によるスキルミオン結晶の安定化とトポロジーの制御 (2024)
  • Author(s): 山家 椋太，速水 賢
  • Organizer: 日本物理学会2024年春季大会
• [Presentation] 相関電子系に対する多極子表現論の構築と交差相関応答への適用 (2023)
  • Author(s): 速水 賢
  • Organizer: 第17回シンポジウム「物性科学領域横断研究会」記念講演,
  • Invited
• [Presentation] 対称性適合多極子基底を用いた新規物性開拓:スピン分裂・非相反伝導・フェロアキシャル秩序 (2023)
  • Author(s): 速水 賢
  • Organizer: 金研研究会 強相関物質における創発物性研究の現状と将来展望
  • Invited
• [Presentation] Representation of electronic order parameters breaking spatial inversion, time-reversal or gauge symmetries (2023)
  • Author(s): 速水 賢
  • Organizer: 令和５年度 新学術領域研究「量子液晶の物性科学」領域研究会
• [Presentation] 電気トロイダル双極子秩序下における磁気不安定性 (2023)
  • Author(s): 印田 朱音, 速水 賢
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] 多極子基底による超伝導ギャップの対称性の分類 (2023)
  • Author(s): 桐越 研光, 速水 賢
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] レーザー誘起磁気相互作用による非共面磁気構造の安定化 (2023)
  • Author(s): 山家 椋太, 速水 賢
  • Organizer: 日本物理学会第78回年次大会
• [Presentation] Symmetry analysis of light-induced magnetic interactions via Floquet engineering (2023)
  • Author(s): R. Yambe and S. Hayami
  • Organizer: Trends in MAGnetism 2023
  • Int'l Joint Research
• [Presentation] Classification of Superconductivity in Multiorbital Systems by Multipoles (2023)
  • Author(s): A. Kirikoshi and S. Hayami
  • Organizer: International Conference on Quantum Liquid Crystals 2023
  • Int'l Joint Research
• [Presentation] Third-order transverse magnetic susceptibility under ferro-axial ordering (2023)
  • Author(s): A. Inda and S. Hayami
  • Organizer: International Conference on Quantum Liquid Crystals 2023
  • Int'l Joint Research
• [Presentation] Floquet engineering of magnetic interactions: Understanding based on the crystal symmetry lowering (2023)
  • Author(s): R. Yambe and S. Hayami
  • Organizer: International Conference on Quantum Liquid Crystals 2023
  • Int'l Joint Research
• [Presentation] Chiral magnetic textures in itinerant magnets (2023)
  • Author(s): S. Hayami
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research / Invited
• [Presentation] Skyrmion and vortex crystals in the Hubbard model (2023)
  • Author(s): K. Kobayashi and S. Hayami
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research
• [Presentation] Microscopic mechanism for intrinsic nonlinear Hall conductivity in noncollinear antiferromagnetic metals (2023)
  • Author(s): A. Kirikoshi and S. Hayami
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research
• [Presentation] Engineering a Skyrmion Crystal in Ferromagnetic/Antiferromagnetic Bilayers Based on the Magnetic Frustration Mechanism (2023)
  • Author(s): K. Okigami, R. Yambe, and S. Hayami
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research
• [Presentation] Multi-step topological phase transitions among meron/antimeron and skyrmion crystals in a centrosymmetric magnet (2023)
  • Author(s): H. Yoshimochi, R. Takagi, J. Ju, N. D. Khanh, H. Saito, H. Sagayama, H. Nakao, S. Itoh, Y. Tokura, T.-h. Arima, S. Hayami, T. Nakajima, and S. Seki
  • Organizer: APS March Meeting 2023
  • Int'l Joint Research
• [Presentation] らせん磁性とらせん構造 (2023)
  • Author(s): 速水 賢
  • Organizer: 日本物理学会2023年春季大会 シンポジウム講演
  • Invited
• [Presentation] 反転対称性を有する遍歴磁性体EuAl4における磁気異方性の制御とスキルミオン相の安定性 (2023)
  • Author(s): 高木里奈，河野秀城，齋藤開，Jonathan White，Victor Ukleev, 速水賢，中島多朗，関真一郎
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] フェリ/反強磁気トロイダル候補金属HoAgGeの磁場中における非線形横伝導率測定 (2023)
  • Author(s): 市野祐喜，宮本大輝，小路山竜平，細井優，下澤雅明，井澤公一，八城愛美，速水賢，大貫惇睦，青木大
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] 電気トロイダル双極子秩序相における非線形横磁化率 (2023)
  • Author(s): 印田朱音，速水賢
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] 対称性に基づくレーザー誘起磁気異方性の研究 (2023)
  • Author(s): 山家椋太，速水賢
  • Organizer: 日本物理学会2023年春季大会
• [Presentation] ミクロな多極子からみたカイラリティ自由度 (2022)
  • Author(s): 速水 賢
  • Organizer: ISSPワークショップ「カイラル物質科学の新展開」
  • Invited
• [Presentation] ミクロな多極子から観た強軸性モーメント (2022)
  • Author(s): 速水 賢
  • Organizer: 第１回アシンメトリ量子研究会
• [Presentation] 時間・空間反転およびゲージ対称性の破れを伴う電子液晶相の研究 (2022)
  • Author(s): 速水 賢
  • Organizer: 新学術（量子液晶）第2期公募研究キックオフミーティング
• [Presentation] PT対称なノンコリニア反強磁性金属における内因性非線形ホール効果 (2022)
  • Author(s): 桐越研光, 速水 賢
  • Organizer: 日本物理学会2022年秋季大会
• [Presentation] ハバード模型におけるスキルミオン相とメロン・アンチメロン相 (2022)
  • Author(s): 小林海翔, 速水 賢
  • Organizer: 日本物理学会2022年秋季大会
• [Presentation] 複数のスキルミオン相を生じる空間反転対称な正方晶物質GdRu2(Si1-xGex)2における磁気相図の全貌の解明 (2022)
  • Author(s): 吉持遥人, 高木里奈, 周芝苑, 速水賢, Nguyen Duy Khanh, Seno Aji, 齋藤開, Deepak Singh, Priya Baral, Leonie Spitz, Victor Ukleev, Jonathan White, Sonia Francoual, Jose R. L. Mardegan, 佐賀山基, 中尾裕則, 有馬孝尚, 十倉好紀, 中島多朗, 関真一郎
  • Organizer: 日本物理学会2022年秋季大会
• [Presentation] 新規トロイダル金属HoAgGeの非線形横伝導率測定 (2022)
  • Author(s): 宮本大輝, 高尾祥平, 多田勝哉, 小路山竜平, 細井優, 下澤雅明, 井澤公一, 八城美愛, 速水賢, 大貫惇睦, 青木大
  • Organizer: 日本物理学会2022年秋季大会
• [Remarks] 研究室ホームページ
  • URL: https://phys.sci.hokudai.ac.jp/~hayami/index.html
• [Remarks] 研究室ホームページ
  • URL: http://phys.sci.hokudai.ac.jp/~hayami/index.html