English

速水グループ
Hayami Group      

レビュー論文

  1. H. Kusunose and ♦S. Hayami,
    "Generalization of microscopic multipoles and cross-correlated phenomena by their orderings"
    J. Phys.: Condens. Matter 34, 464002 (2022)

  2. ♦S. Hayami and Y. Motome,
    "Topological spin crystals by itinerant frustration"
    J. Phys.: Condens. Matter 33, 443001 (2021)
    Preprint (arXiv:2103.10647, Condensed Matter)

  3. C. D. Batista, S.-Z. Lin, ♦S. Hayami, and Y. Kamiya,
    "Frustration and chiral orderings in correlated electron systems"
    Rep. Prog. Phys. 79, 084504 (2016)

解説記事

  1. ♦速水 賢,大岩 陸人, ♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その10:最終回)"
    固体物理 58(7), 357-376 (2023)

  2. ♦速水 賢,大岩 陸人, ♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その9)"
    固体物理 58(1), 11-30 (2023)

  3. ♦速水 賢,♦山家 椋太,
    "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"
    固体物理 57(4), 281-291 (2022)

  4. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その8)"
    固体物理 57(3), 181-201 (2022)

  5. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その7)"
    固体物理 56(10), 507-531 (2021)

  6. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その6)"
    固体物理 56(7), 333-353 (2021)

  7. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その5)"
    固体物理 56(4), 171-188 (2021)

  8. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その4)"
    固体物理 56(1), 1-19 (2021)

  9. 楠瀬 博明,♦速水 賢,
    "微視的多極子の一般化と秩序および交差相関物性"
    固体物理 55(11), 523-534 (2020)

  10. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その3)"
    固体物理 55(8), 379-396 (2020)

  11. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その2)"
    固体物理 55(1), 1-11 (2020)

  12. ♦速水 賢,♦八城 愛美,柳 有起,楠瀬 博明,
    "ミクロな多極子による電子物性の表現論 (その1)"
    固体物理 54(3), 131-145 (2019)

  13. ♦速水 賢,楠瀬 博明,求 幸年,
    "遍歴電子系における自発的な空間反転対称性の破れ -非従来型多極子秩序とスピン・バレー分裂,非対角応答-"
    固体物理 50(5), 217-234 (2015)

プレプリント

  1. ♦S. Hayami and H. Kusunose,
    "Unified description of electronic orderings and cross correlations by complete multipole representation"
    Preprint (arXiv:2403.09019, Condensed Matter)

  2. H. Kusunose and ♦S. Hayami,
    "Toroidal orders and related phenomena in nonmagnetic and magnetic materials"
    Preprint (arXiv:2403.09492, Condensed Matter)

  3. ♦R. Yambe and ♦S. Hayami,
    "Dynamical generation of skyrmion and bimeron crystals by a circularly polarized electric field in frustrated magnets"
    Preprint (arXiv:2403.06118, Condensed Matter)

  4. M. Gen, Y. Fujishiro, ♦K. Okigami, ♦S. Hayami, K. Adachi, D. Hashizume, T. Kurumaji, H. Sagayama, H. Nakao, Y. Tokura, T.-h. Arima,
    "Incommensurate broken-helix and broken-fanlike states in axion insulator candidate EuIn2As2"
    Preprint (arXiv:2403.03022, Condensed Matter)

  5. H. Yoshimochi, R. Takagi, J. Ju, N. D. Khanh, H. Saito, H. Sagayama, H. Nakao, S. Itoh, Y. Tokura, T. Arima, ♦S. Hayami, T. Nakajima, and S. Seki,
    "Multi-step topological transitions among meron and skyrmion crystals in a centrosymmetric magnet"
    Preprint (arXiv:2402.13751, Condensed Matter)

  6. ♦A. Inda, R. Oiwa, ♦S. Hayami, H. M. Yamamoto, and H. Kusunose,
    "Quantification of chirality based on electric toroidal monopole"
    Preprint (arXiv:2402.13611, Condensed Matter)

  7. ♦S. Hayami,
    "Double-Q and quadruple-Q instabilities at low-symmetric ordering wave vectors under tetragonal symmetry"
    Preprint (arXiv:2402.11721, Condensed Matter)

  8. ♦S. Hayami,
    "Field-induced transformation between triangular and square skyrmion crystals in a tetragonal polar magnet"
    Preprint (arXiv:2312.15587, Condensed Matter)

  9. ♦A. Inda and ♦S. Hayami,
    "Magnetic instability under ferroaxial moment"
    Preprint (arXiv:2312.02444, Condensed Matter)

  10. ♦A. Kirikoshi and ♦S. Hayami,
    "Classification of Multi-Orbital Superconducting State based on Augmented Multipoles"
    Preprint (arXiv:2312.02410, Condensed Matter)

  11. ♦S. Hayami,
    "Anisotropic skyrmion crystal on a centrosymmetric square lattice under an in-plane magnetic field"
    Preprint (arXiv:2312.01542, Condensed Matter)

  12. ♦S. Hayami,
    "Classification of multipoles induced by external fields and currents under electronic nematic ordering with quadrupole moments"
    Preprint (arXiv:2311.16393, Condensed Matter)

  13. Y. Dong, Y. Kinoshita, M. Ochi, R. Nakachi, R. Higashinaka, ♦S. Hayami, Y. Wan, Y. Arai, S. Huh, M. Hashimoto, D. Lu, M. Tokunaga, Y. Aoki, T. D. Matsuda, and T. Kondo,
    "Magnetic-domain-dependent pseudogap induced by Fermi surface nesting in a centrosymmetric skyrmion magnet"
    Preprint (arXiv:2307.08000, Condensed Matter)

出版論文

  1. ♦S. Hayami,
    "Effect of in-plane magnetic field on skyrmions in a centrosymmetric triangular-lattice system with symmetric anisotropic exchange interaction"
    Magnetism 4, 54-72 (2024)

  2. ♦S. Hayami, ♦R. Yambe, and H. Kusunose,
    "Analysis of Photo-Induced Chirality and Magnetic Toroidal Moment Based on Floquet Formalism"
    J. Phys. Soc. Jpn. 93, 043702 (2024)
    Preprint (arXiv:2312.07735, Condensed Matter)

  3. ♦R. Yambe and ♦S. Hayami,
    "Scalar spin chirality induced by a circularly polarized electric field in a classical kagome magnet"
    Phys. Rev. B 109, 064428 (2024)
    Preprint (arXiv:2312.15891, Condensed Matter)

  4. ♦S. Hayami,
    "Hybrid skyrmion and anti-skyrmion phases in polar C4v systems"
    Phys. Rev. B 109, 054422 (2024)
    Preprint (arXiv:2401.04245, Condensed Matter)

  5. ♦S. Hayami,
    "Three-sublattice antiferro-type and ferri-type skyrmion crystals in magnets without the Dzyaloshinskii-Moriya interaction"
    Phys. Rev. B 109, 014415 (2024)
    Preprint (arXiv:2310.10834, Condensed Matter)

  6. D. Singh, Y. Fujishiro, ♦S. Hayami, S. H. Moody, T. Nomoto, P. R. Baral, V. Ukleev, R. Cubitt, N.-J. Steinke, D. J. Gawryluk, E. Pomjakushina, Y. Onuki, R. Arita, Y. Tokura, N. Kanazawa, and J. S. White,
    "Transition between distinct hybrid skyrmion textures through their hexagonal-to-square crystal transformation in a polar magnet"
    Nat. Commun. 14, 8050 (2023)

  7. ♦S. Hayami and K. Hattori,
    "Multiple-q Dipole-Quadrupole Instability in Spin-1 Triangular-Lattice Systems"
    J. Phys. Soc. Jpn. 92, 124709 (2023)
    Preprint (arXiv:2304.00681, Condensed Matter)

  8. ♦A. Kirikoshi and ♦S. Hayami,
    "Rotational Response Induced by Electric Toroidal Dipole"
    J. Phys. Soc. Jpn. 92, 123703 (2023)
    Preprint (arXiv:2310.15666, Condensed Matter)

  9. ♦S. Hayami and H. Kusunose,
    "Chiral Charge as Hidden Order Parameter in URu2Si2"
    J. Phys. Soc. Jpn. 92, 113704 (2023) [selected in Papers of Editors' Choice]
    JPS Hot Topics 4, 001 (2024)
    Preprint (arXiv:2304.02120, Condensed Matter)

  10. ♦S. Hayami and H. Kusunose,
    "Time-reversal switching responses in antiferromagnets"
    Phys. Rev. B 108, L140409 (2023)
    Preprint (arXiv:2306.04017, Condensed Matter)

  11. ♦S. Hayami,
    "Uniform and staggered electric axial moment in a zigzag chain"
    Phys. Rev. B 108, 094106 (2023)
    Preprint (arXiv:2307.09686, Condensed Matter)

  12. ♦S. Hayami,
    "Chern insulating state with double-Q ordering wave vectors at the Brillouin zone boundary"
    Phys. Rev. B 108, 094416 (2023)
    Preprint (arXiv:2306.15854, Condensed Matter)

  13. ♦S. Hayami,
    "Checkerboard bubble lattice formed by octuple-period quadruple-Q spin density waves"
    Phys. Rev. B 108, 094415 (2023)
    Preprint (arXiv:2307.10444, Condensed Matter)

  14. ♦S. Hayami, R. Oiwa, and H. Kusunose,
    "Unconventional Hall effect and magnetoresistance induced by metallic ferroaxial ordering"
    Phys. Rev. B 108, 085124 (2023)
    Preprint (arXiv:2306.12614, Condensed Matter)

  15. ♦R. Yambe and ♦S. Hayami,
    "Symmetry analysis of light-induced magnetic interactions via Floquet engineering"
    Phys. Rev. B 108, 064420 (2023)
    Preprint (arXiv:2303.14627, Condensed Matter)

  16. ♦S. Hayami and Y. Kato,
    "Magnetic bubble crystal in tetragonal magnets"
    Phys. Rev. B 108, 024426 (2023)
    Preprint (arXiv:2305.08333, Condensed Matter)

  17. ♦S. Hayami,
    "Antiferro Skyrmion Crystal Phases in a Synthetic Bilayer Antiferromagnet under an In-Plane Magnetic Field"
    J. Phys. Soc. Jpn. 92, 084702 (2023)
    Preprint (arXiv:2306.06882, Condensed Matter)

  18. ♦S. Hayami and ♦R. Yambe,
    "Field direction dependent skyrmion crystals in noncentrosymmetric cubic magnets: A comparison between point groups (O,T) and Td"
    Phys. Rev. B 107, 174435 (2023)
    Preprint (arXiv:2305.14619, Condensed Matter)

  19. H. Kusunose, R. Oiwa, and ♦S. Hayami,
    "Symmetry-adapted modeling for molecules and crystals"
    Phys. Rev. B 107, 195118 (2023)
    Preprint (arXiv:2303.11033, Condensed Matter)

  20. ♦R. Yambe and ♦S. Hayami,
    "Anisotropic spin model and multiple-Q states in cubic systems"
    Phys. Rev. B 107, 174408 (2023)
    Preprint (arXiv:2301.12629, Condensed Matter)

  21. ♦A. Kirikoshi and ♦S. Hayami,
    "Microscopic mechanism for intrinsic nonlinear anomalous Hall conductivity in noncollinear antiferromagnetic metals"
    Phys. Rev. B 107, 155109 (2023)
    Preprint (arXiv:2211.06817, Condensed Matter)

  22. ♦A. Inda and ♦S. Hayami,
    "Nonlinear Transverse Magnetic Susceptibility under Electric Toroidal Dipole Ordering"
    J. Phys. Soc. Jpn. 92, 043701 (2023)
    Preprint (arXiv:2212.13018, Condensed Matter)

  23. ♦S. Hayami, S. Tsutsui, H. Hanate, N. Nagasawa, Y. Yoda, and K. Matsuhira,
    "Cluster Toroidal Multipoles Formed by Electric-Quadrupole and Magnetic-Octupole Trimers: A Possible Scenario for Hidden Orders in Ca5Ir3O12"
    J. Phys. Soc. Jpn. 92, 033702 (2023)
    Preprint (arXiv:2302.03818, Condensed Matter)

  24. ♦S. Hayami and Y. Kato,
    "Widely-sweeping magnetic field-temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets"
    J. Magn. Magn. Mater. 571, 170547 (2023)
    Preprint (arXiv:2209.01810, Condensed Matter)

  25. ♦S. Hayami,
    "Multiple-Q instability under fourth-order inplane single-ion anisotropy"
    J. Magn. Magn. Mater. 570, 170507 (2023)

  26. ♦R. Yambe and ♦S. Hayami,
    "Ferrochiral, antiferrochiral, and ferrichiral skyrmion crystals in an itinerant honeycomb magnet"
    Phys. Rev. B 107, 014417 (2023)
    Preprint (arXiv:2208.05115, Condensed Matter)

  27. ♦S. Hayami,
    "Stacking-dependent nonreciprocal transport in magnetic skyrmions"
    J. Magn. Magn. Mater. 568, 170420 (2023)
    Preprint (arXiv:2301.07938, Condensed Matter)

  28. ♦S. Hayami,
    "Orthorhombic distortion and rectangular skyrmion crystal in a centrosymmetric tetragonal host"
    J. Phys.: Mater. 6, 014006 (2023)

  29. ♦R. Yambe and ♦S. Hayami,
    "Effective spin model in momentum space: Toward a systematic understanding of multiple-Q instability by momentum-resolved anisotropic exchange interactions"
    Phys. Rev. B 106, 174437 (2022)
    Preprint (arXiv:2202.09744, Condensed Matter)

  30. ♦S. Hayami and H. Kusunose,
    "Magnetic Toroidal Moment under Partial Magnetic Order in Hexagonal Zigzag-Chain Compound Ce3TiBi5"
    J. Phys. Soc. Jpn. 91, 123701 (2022)
    Preprint (arXiv:2208.01754, Condensed Matter)

  31. ♦S. Hayami,
    "Zero-field skyrmion, meron, and vortex crystals in centrosymmetric hexagonal magnets"
    J. Magn. Magn. Mater. 564, 170036 (2022)

  32. K. Kobayashi and ♦S. Hayami,
    "Skyrmion and vortex crystals in the Hubbard model"
    Phys. Rev. B 106, L140406 (2022)
    Preprint (arXiv:2208.02110, Condensed Matter)

  33. ♦S. Hayami, R. Oiwa, and H. Kusunose,
    "Electric Ferro-Axial Moment as Nanometric Rotator and Source of Longitudinal Spin Current"
    J. Phys. Soc. Jpn. 91, 113702 (2022) [selected in Papers of Editors' Choice]
    JPS Hot Topics 2, 043 (2022)
    Preprint (arXiv:2111.10519, Condensed Matter)

  34. ♦S. Hayami,
    "Ferroaxial moment induced by vortex spin texture"
    Phys. Rev. B 106, 144402 (2022)[selected in Editors' Suggestion]
    Preprint (arXiv:2209.10657, Condensed Matter)

  35. ♦K. Okigami, ♦R. Yambe, and ♦S. Hayami,
    "Engineering a Skyrmion Crystal in Ferromagnetic/Antiferromagnetic Bilayers Based on Magnetic Frustration Mechanism"
    J. Phys. Soc. Jpn. 91, 103701 (2022)
    Preprint (arXiv:2207.07375, Condensed Matter)

  36. ♦M. Yatsushiro and ♦S. Hayami,
    "Mean-field Study of Antiferromagnetic and Antiferroquadrupolar Orderings in Tetragonal CeCoSi"
    J. Phys. Soc. Jpn. 91, 104701 (2022)
    Preprint (arXiv:2205.11272, Condensed Matter)

  37. ♦S. Hayami and ♦M. Yatsushiro,
    "Nonreciprocal Transport in Noncoplanar Magnetic Systems without Spin-Orbit Coupling, Net Scalar Chirality, or Magnetization"
    J. Phys. Soc. Jpn. 91, 094704 (2022)
    Preprint (arXiv:2207.11420, Condensed Matter)

  38. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal"
    J. Phys. Soc. Jpn. 91, 093702 (2022)
    Preprint (arXiv:2206.03042, Condensed Matter)

  39. ♦S. Hayami,
    "Stability of Skyrmion Crystal Phase in Centrosymmetric Distorted Triangular-Lattice Antiferromagnets"
    J. Phys. Soc. Jpn. 91, 093701 (2022)
    Preprint (arXiv:2207.05862, Condensed Matter)

  40. ♦S. Hayami and ♦M. Yatsushiro,
    "Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling"
    Phys. Rev. B 106, 014420 (2022)[selected in Editors' Suggestion]
    Preprint (arXiv:2207.05857, Condensed Matter)

  41. ♦S. Hayami, ♦M. Yatsushiro, and H. Kusunose,
    "Nonlinear spin Hall effect in PT-symmetric collinear magnets"
    Phys. Rev. B 106, 024405 (2022)
    Preprint (arXiv:2203.03754, Condensed Matter)

  42. ♦S. Hayami,
    "Square skyrmion crystal in centrosymmetric systems with locally inversion-asymmetric layers"
    J. Phys.: Condens. Matter 34, 365802 (2022)
    Preprint (arXiv:2206.09614, Condensed Matter)

  43. ♦S. Hayami and ♦R. Yambe,
    "Skyrmion crystal under D3h point group: Role of out-of-plane Dzyaloshinskii-Moriya interaction"
    Phys. Rev. B 105, 224423 (2022)
    Preprint (arXiv:2206.09060, Condensed Matter)

  44. ♦S. Hayami,
    "Skyrmion crystal with integer and fractional skyrmion numbers in a nonsymmorphic lattice structure with the screw axis"
    Phys. Rev. B 105, 224411 (2022)
    Preprint (arXiv:2206.04163, Condensed Matter)

  45. J. Nasu and ♦S. Hayami,
    "Antisymmetric Thermopolarization by Electric Toroidicity"
    Phys. Rev. B 105, 245125 (2022)
    Preprint (arXiv:2112.06387, Condensed Matter)

  46. ♦S. Hayami,
    "Rectangular and square skyrmion crystals on a centrosymmetric square lattice with easy-axis anisotropy"
    Phys. Rev. B 105, 174437 (2022)
    Preprint (arXiv:2205.09236, Condensed Matter)

  47. ♦S. Hayami,
    "Multifarious skyrmion phases on a trilayer triangular lattice"
    Phys. Rev. B 105, 184426 (2022)
    Preprint (arXiv:2205.08004, Condensed Matter)

  48. ♦S. Hayami and ♦M. Yatsushiro,
    "Spin Conductivity Based on Magnetic Toroidal Quadrupole Hidden in Antiferromagnets"
    J. Phys. Soc. Jpn. 91, 063702 (2022)
    Preprint (arXiv:2204.07326, Condensed Matter)

  49. ♦M. Yatsushiro, R. Oiwa, H. Kusunose, and ♦S. Hayami,
    "Analysis of model-parameter dependences on the second-order nonlinear conductivity in PT-symmetric collinear antiferromagnetic metals with magnetic toroidal moment on zigzag chains"
    Phys. Rev. B 105, 155157 (2022)
    Preprint (arXiv:2109.14132, Condensed Matter)

  50. R. Takagi, N. Matsuyama, V. Ukleev, L. Yu, J. S. White, S. Francoual, J. R. L. Mardegan, ♦S. Hayami, H. Saito, K. Kaneko, K. Ohishi, Y. Onuki, T. Arima, Y. Tokura, T. Nakajima, and S. Seki,
    "Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound"
    Nat. Commun. 13, 1472 (2022)

  51. ♦S. Hayami and ♦R. Yambe,
    "Helicity locking of a square skyrmion crystal in a centrosymmetric lattice system without vertical mirror symmetry"
    Phys. Rev. B 105, 104428 (2022)
    Preprint (arXiv:2203.08333, Condensed Matter)

  52. ♦S. Hayami,
    "Skyrmion crystals in centrosymmetric triangular magnets under hexagonal and trigonal single-ion anisotropy"
    J. Magn. Magn. Mater. 553, 169220 (2022)
    Preprint (arXiv:2202.12964, Condensed Matter)

  53. N. D. Khanh, T. Nakajima, ♦S. Hayami, S. Gao, Y. Yamasaki, H. Sagayama, H. Nakao, R. Takagi, Y. Motome, Y. Tokura, T. Arima, S. Seki,
    "Zoology of Multiple-Q Spin Textures in a Centrosymmetric Tetragonal Magnet with Itinerant Electrons"
    Adv. Sci. 9, 2105452 (2022)
    Preprint (arXiv:2201.06237, Condensed Matter)

  54. ♦S. Hayami,
    "Multiple Skyrmion Crystal Phases by Itinerant Frustration in Centrosymmetric Tetragonal Magnets"
    J. Phys. Soc. Jpn. 91, 023705 (2022)
    Preprint (arXiv:2201.02326, Condensed Matter)

  55. ♦S. Hayami,
    "Mechanism of antisymmetric spin polarization in centrosymmetric multiple-Q magnets based on effective chiral bilinear and biquadratic spin cross products"
    Phys. Rev. B 105, 024413 (2022)
    Preprint (arXiv:2201.01354, Condensed Matter)

  56. ♦S. Hayami,
    "Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction"
    Phys. Rev. B 105, 014408 (2022)
    Preprint (arXiv:2112.07072, Condensed Matter)

  57. ♦S. Hayami and ♦T. Matsumoto,
    "Essential model parameters for nonreciprocal magnons in multisublattice systems"
    Phys. Rev. B 105, 014404 (2022)
    Preprint (arXiv:2112.07071, Condensed Matter)

  58. Y. Kato, ♦S. Hayami and Y. Motome,
    "Spin excitation spectra in helimagnetic states: Proper-screw, cycloid, vortex crystal, and hedgehog lattice"
    Phys. Rev. B 104, 224405 (2021)
    Preprint (arXiv:2109.05628, Condensed Matter)

  59. ♦S. Hayami and ♦R. Yambe,
    "Locking of skyrmion cores on a centrosymmetric discrete lattice: Onsite versus offsite"
    Phys. Rev. Research 3, 043158 (2021)
    Preprint (arXiv:2107.03500, Condensed Matter)

  60. ♦S. Hayami, T. Okubo, and Y. Motome,
    "Phase Shift in Skyrmion Crystals"
    Nat. Commun. 12, 6927 (2021)
    Preprint (arXiv:2005.03168, Condensed Matter)

  61. ♦S. Hayami,
    "Temperature-driven transition from skyrmion to bubble crystals in centrosymmetric itinerant magnets"
    New J. Phys. 23, 113032 (2021)
    Preprint (arXiv:2111.03202, Condensed Matter)

  62. ♦T. Matsumoto and ♦S. Hayami,
    "Nonreciprocal magnon excitations by the Dzyaloshinskii-Moriya interaction on the basis of bond magnetic toroidal multipoles"
    Phys. Rev. B 104, 134420 (2021)
    Preprint (arXiv:2107.12743, Condensed Matter)

  63. ♦S. Hayami and Y. Motome,
    "Charge density waves in multiple-Q spin states"
    Phys. Rev. B 104, 144404 (2021)
    Preprint (arXiv:2108.04997, Condensed Matter)

  64. ♦S. Hayami and ♦R. Yambe,
    "Meron-antimeron crystals in noncentrosymmetric itinerant magnets on a triangular lattice"
    Phys. Rev. B 104, 094425 (2021)
    Preprint (arXiv:2107.03501, Condensed Matter)

  65. ♦M. Yatsushiro, H. Kusunose, and ♦S. Hayami,
    "Multipole classification in 122 magnetic point groups for unified understanding of multiferroic responses and transport phenomena"
    Phys. Rev. B 104, 054412 (2021)
    Preprint (arXiv:2105.12890, Condensed Matter)

  66. ♦S. Hayami and H. Kusunose,
    "Spin-orbital-momentum locking under odd-parity magnetic quadrupole ordering"
    Phys. Rev. B 104, 045117 (2021)
    Preprint (arXiv:2105.09444, Condensed Matter)

  67. ♦S. Hayami,
    "In-plane magnetic field-induced skyrmion crystal in frustrated magnets with easy-plane anisotropy"
    Phys. Rev. B 103, 224418 (2021)

  68. ♦S. Hayami and ♦R. Yambe,
    "Field-Direction Sensitive Skyrmion Crystals in Cubic Chiral Systems: Implication to 4f-Electron Compound EuPtSi"
    J. Phys. Soc. Jpn. 90, 073705 (2021) [selected in Papers of Editors' Choice]
    JPS Hot Topics 1, 048 (2021)
    Preprint (arXiv:2106.00113, Condensed Matter)

  69. ♦R. Yambe and ♦S. Hayami,
    "Skyrmion crystals in centrosymmetric itinerant magnets without horizontal mirror plane"
    Sci. Rep. 11, 11184 (2021)

  70. ♦S. Hayami and H. Kusunose,
    "Essential role of anisotropic magnetic dipole in anomalous Hall effect"
    Phys. Rev. B 103, L180407 (2021)
    Preprint (arXiv:2104.07964, Condensed Matter)

  71. ♦S. Hayami,
    "Electronic Nematic Ordering Driven by Atomic-scale Multipoles"
    JPS Hot Topics 1, 035 (2021)

  72. ♦S. Hayami,
    "Rich Electronic Nematic Orderings Realized by Atomic-scale Electric Quadrupoles"
    JPSJ News Comments 18, 06 (2021)

  73. H. Hanate, T. Hasegawa, ♦S. Hayami, S. Tsutsui, S. Kawano, and K. Matsuhira,
    "First Observation of Superlattice Reflections in the Hidden Order at 105 K of Spin-Orbit Coupled Iridium Oxide Ca5Ir3O12"
    J. Phys. Soc. Jpn. 90, 063702 (2021) [selected in Papers of Editors' Choice]
    JPS Hot Topics 1, 042 (2021)

  74. S. Seo, ♦S. Hayami, Y. Su, S. M. Thomas, F. Ronning, E. D. Bauer, J. D. Thompson, S.-Z. Lin, and P. F. S. Rosa,
    "Spin-texture-driven electrical transport in multi-Q antiferromagnets"
    Commun. Phys. 4, 58 (2021)

  75. M. Hirschberger, ♦S. Hayami, and Y. Tokura,
    "Nanometric skyrmion lattice from anisotropic exchange interactions in a centrosymmetric host"
    New J. Phys. 23, 023039 (2021)

  76. ♦S. Hayami and Y. Motome,
    "Noncoplanar multiple-Q spin textures by itinerant frustration: Effects of single-ion anisotropy and bond-dependent anisotropy"
    Phys. Rev. B 103, 054422 (2021)
    Preprint (arXiv:2011.13040, Condensed Matter)

  77. ♦S. Hayami and Y. Motome,
    "Square skyrmion crystal in centrosymmetric itinerant magnets"
    Phys. Rev. B 103, 024439 (2021)
    Preprint (arXiv:2010.14671, Condensed Matter)

  78. ♦M. Yatsushiro and ♦S. Hayami,
    "NQR and NMR spectra in odd-parity multipole material CeCoSi"
    Phys. Rev. B 102, 195147 (2020)
    Preprint (arXiv:2011.06212, Condensed Matter)

  79. Y. Yasui, C. J. Butler, N. D. Khanh, ♦S. Hayami, T. Nomoto, T. Hanaguri, Y. Motome, R. Arita, T.-h. Arima, Y. Tokura, and S. Seki,
    "Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2"
    Nat. Commun. 11, 5925 (2020)
    Preprint (arXiv:2011.00785, Condensed Matter)

  80. ♦S. Hayami, Y. Yanagi, and H. Kusunose,
    "Bottom-up design of spin-split and reshaped electronic band structures in antiferromagnets without spin-orbit coupling: Procedure on the basis of augmented multipoles"
    Phys. Rev. B 102, 144441 (2020)
    Preprint (arXiv:2008.10815, Condensed Matter)

  81. H. Kusunose, R. Oiwa, and ♦S. Hayami,
    "Complete Multipole Basis Set for Single-Centered Electron Systems"
    J. Phys. Soc. Jpn. 89, 104704 (2020)
    Preprint (arXiv:2007.08039, Condensed Matter)

  82. ♦S. Hayami and ♦R. Yambe,
    "Degeneracy Lifting of Neel, Bloch, and Anti-Skyrmion Crystals in Centrosymmetric Tetragonal Systems"
    J. Phys. Soc. Jpn. 89, 103702 (2020)
    Preprint (arXiv:2009.06821, Condensed Matter)

  83. M. Naka, ♦S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, and H. Seo,
    "Anomalous Hall effect in κ-type organic antiferromagnets"
    Phys. Rev. B 102, 075112 (2020)
    Preprint (arXiv:2004.04578, Condensed Matter)

  84. ♦S. Hayami,
    "Multiple-Q magnetism by anisotropic bilinear-biquadratic interactions in momentum space"
    J. Magn. Magn. Mater. 513, 167181 (2020)

  85. ♦T. Matsumoto and ♦S. Hayami,
    "Nonreciprocal magnons due to symmetric anisotropic exchange interaction in honeycomb antiferromagnets"
    Phys. Rev. B 101, 224419 (2020)
    Preprint (arXiv:2005.13729, Condensed Matter)

  86. ♦S. Hayami, Y. Yanagi, and H. Kusunose,
    "Spontaneous antisymmetric spin splitting in noncollinear antiferromagnets without spin-orbit coupling"
    Phys. Rev. B 101, 220403(R) (2020)
    Preprint (arXiv:2001.05630, Condensed Matter)

  87. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic hedgehog lattices in noncentrosymmetric metals"
    Phys. Rev. B 101, 144416 (2020)
    Preprint (arXiv:1908.05044, Condensed Matter)

  88. Y. Su, ♦S. Hayami, and S.-Z. Lin,
    "Dimension transcendence and anomalous charge transport in magnets with moving multiple-Q spin textures"
    Phys. Rev. Research 2, 013160 (2020)
    Preprint (arXiv:1904.05473, Condensed Matter)

  89. ♦M. Yatsushiro and ♦S. Hayami,
    "Odd-Parity Multipoles by Staggered Magnetic Dipole and Electric Quadrupole Orderings in CeCoSi"
    J. Phys. Soc. Jpn. 89, 013703 (2020)
    Preprint (arXiv:1912.02422, Condensed Matter)

  90. ♦R. Yambe and ♦S. Hayami,
    "Double-Q Chiral Stripe in the d–p Model with Strong Spin–Charge Coupling"
    J. Phys. Soc. Jpn. 89, 013702 (2020)
    Preprint (arXiv:1912.03906, Condensed Matter)

  91. ♦S. Hayami, Y. Yanagi, and H. Kusunose,
    "Momentum-Dependent Spin Splitting by Collinear Antiferromagnetic Ordering"
    J. Phys. Soc. Jpn. 88, 123702 (2019)
    Preprint (arXiv:1908.08680, Condensed Matter)

  92. M. Naka, ♦S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, and H. Seo,
    "Spin current generation in organic antiferromagnets"
    Nat. Commun. 10, 4305 (2019) [selected in Editors' Highlights]
    Preprint (arXiv:1902.02506, Condensed Matter)

  93. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Magnetic Vortex Induced by Nonmagnetic Impurity in Ferromagnets: Magnetic Multipole and Toroidal around the Vacancy"
    J. Phys. Soc. Jpn. 88, 063702 (2019)
    Preprint (arXiv:1905.07669, Condensed Matter)

  94. M.-T. Suzuki, T. Nomoto, R. Arita, Y. Yanagi, ♦S. Hayami, and H. Kusunose,
    "Multipole expansion for magnetic structures: A generation scheme for symmetry-adapted orthonormal basis set in crystallographic point group"
    Phys. Rev. B 99, 174407 (2019) [selected in Editors' Suggestion]
    Preprint (arXiv:1902.10819, Condensed Matter)

  95. ♦M. Yatsushiro and ♦S. Hayami,
    "Atomic-Scale Magnetic Toroidal Dipole under Odd-Parity Hybridization"
    J. Phys. Soc. Jpn. 88, 054708 (2019)
    Preprint (arXiv:1903.04708, Condensed Matter)

  96. ♦S. Hayami, Y. Yanagi, H. Kusunose, and Y. Motome,
    "Electric Toroidal Quadrupoles in Spin-Orbit-Coupled Metal Cd2Re2O7"
    Phys. Rev. Lett. 122, 147602 (2019) [selected as Cover image and PDF FILE]
    Preprint (arXiv:1812.01249, Condensed Matter)

  97. ♦S. Hayami and Y. Motome,
    "Effect of magnetic anisotropy on Skyrmions with a high topological number in itinerant magnets"
    Phys. Rev. B 99, 094420 (2019)
    Preprint (arXiv:1811.11336, Condensed Matter)

  98. R. Takagi, J. S. White, ♦S. Hayami, R. Arita, D. Honecker, H. M. Rønnow, Y. Tokura, and S. Seki,
    "Multiple-q noncollinear magnetism in an itinerant hexagonal magnet"
    Sci. Adv. 4, eaau3402 (2018)

  99. ♦S. Hayami, ♦M. Yatsushiro, Y. Yanagi, and H. Kusunose,
    "Classification of atomic-scale multipoles under crystallographic point groups and application to linear response tensors"
    Phys. Rev. B 98, 165110 (2018) [selected in Editors' Suggestion]
    Preprint (arXiv:1806.01964, Condensed Matter)

  100. ♦S. Hayami and Y. Motome,
    "Néel- and Bloch-Type Magnetic Vortices in Rashba Metals"
    Phys. Rev. Lett. 121, 137202 (2018) [selected as Cover image and PDF FILE]
    Preprint (arXiv:1803.01543, Condensed Matter)

  101. ♦S. Hayami and H. Kusunose,
    "Microscopic Description of Electric and Magnetic Toroidal Multipoles in Hybrid Orbitals"
    J. Phys. Soc. Jpn. 87, 033709 (2018) [selected in Most Cited Articles in 2019 from Vol. 87 (2018), selected in 第27回日本物理学会論文賞]
    Preprint (arXiv:1712.02927, Condensed Matter)

  102. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Emergent odd-parity multipoles and magnetoelectric effects on a diamond structure: implication to 5d transition metal oxides AOsO4 (A= K, Rb, and Cs)"
    Phys. Rev. B 97, 024414 (2018)
    Preprint (arXiv:1711.09507, Condensed Matter)

  103. Y. Yanagi, ♦S. Hayami, and H. Kusunose,
    "Manipulating magnetoelectric effect -- Essence learned from Co4Nb2O9"
    Phys. Rev. B 97, 020404 (2018)
    Preprint (arXiv:1712.03918, Condensed Matter)

  104. R. Ozawa, ♦S. Hayami, K. Barros, and Y. Motome,
    "Shape of magnetic domain walls formed by coupling to mobile charges"
    Phys. Rev. B 96, 094417 (2017)
    Preprint (arXiv:1609.07189, Condensed Matter)

  105. ♦S. Hayami, R. Ozawa, and Y. Motome,
    "Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets"
    Phys. Rev. B 95, 224424 (2017), erratum [selected in Kaleidoscopes]
    Preprint (arXiv:1703.07690, Condensed Matter)

  106. R. Ozawa, ♦S. Hayami, and Y. Motome,
    "Zero-Field Skyrmions with a High Topological Number in Itinerant Magnets"
    Phys. Rev. Lett. 118, 147205 (2017)
    Preprint (arXiv:1703.03227, Condensed Matter)

  107. ♦S. Hayami, S.-Z. Lin, Y. Kamiya, and C. D. Batista,
    "Vortices, skyrmions, and chirality waves in frustrated Mott insulators with a quenched periodic array of impurities"
    Phys. Rev. B 94, 174420 (2016)
    Preprint (arXiv:1607.07100, Condensed Matter)

  108. R. Ozawa, ♦S. Hayami, K. Barros, G. W. Chern, Y. Motome, and C. D. Batista,
    "Vortex Crystals with Chiral Stripes in Itinerant Magnets"
    J. Phys. Soc. Jpn. 85, 103703 (2016)
    Preprint (arXiv:1510.06830, Condensed Matter)

  109. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Emergent spin-valley-orbital physics by spontaneous parity breaking"
    J. Phys.: Condens. Matter 28, 395601 (2016)
    Preprint (arXiv:1607.05782, Condensed Matter)

  110. ♦S. Hayami, R. Ozawa, and Y. Motome,
    "Engineering chiral density waves and topological band structures by multiple-Q superpositions of collinear up-up-down-down orders"
    Phys. Rev. B 94, 024424 (2016)
    Preprint (arXiv:1603.06646, Condensed Matter)

  111. ♦S. Hayami, S.-Z. Lin, and C. D. Batista,
    "Bubble and skyrmion crystals in frustrated magnets with easy-axis anisotropy"
    Phys. Rev. B 93, 184413 (2016)
    Preprint (arXiv:1601.02064, Condensed Matter)

  112. S.-Z. Lin, ♦S. Hayami, and C. D. Batista,
    "Magnetic Vortex Induced by Nonmagnetic Impurity in Frustrated Magnets"
    Phys. Rev. Lett. 116, 187202 (2016)

  113. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Asymmetric Magnon Excitation by Spontaneous Toroidal Ordering"
    J. Phys. Soc. Jpn. 85, 053705 (2016)
    Preprint (arXiv:1508.05627, Condensed Matter)

  114. S.-Z. Lin and ♦S. Hayami,
    "Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions"
    Phys. Rev. B 93, 064430 (2016)
    Preprint (arXiv:1512.05012, Condensed Matter)

  115. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous multipole ordering by local parity mixing"
    J. Phys. Soc. Jpn. 84, 064717 (2015)
    Preprint (arXiv:1502.00057, Condensed Matter)

  116. ♦S. Hayami and Y. Motome,
    "Topological semimetal-to-insulator phase transition between noncollinear and noncoplanar multiple-Q states on a square-to-triangular lattice"
    Phys. Rev. B 91, 075104 (2015)
    Preprint (arXiv:1412.0752, Condensed Matter)

  117. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous parity breaking in spin-orbital coupled systems"
    Phys. Rev. B 90, 081115(R) (2014)
    Preprint (arXiv:1406.2093, Condensed Matter)

  118. ♦S. Hayami and Y. Motome,
    "Multiple-Q instability by (d-2)-dimensional connections of Fermi surfaces"
    Phys. Rev. B 90, 060402(R) (2014)
    Preprint (arXiv:1406.3119, Condensed Matter)

  119. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Toroidal order in metals without local inversion symmetry"
    Phys. Rev. B 90, 024432 (2014) [selected in Editors' Suggestion]
    Preprint (arXiv:1404.1156, Condensed Matter)

  120. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Three-dimensional Dirac electrons on a cubic lattice with noncoplanar multiple-Q order"
    Phys. Rev. B 89, 085124 (2014)
    Preprint (arXiv:1305.5031, Condensed Matter)

  121. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Disorder and Metal-Insulator Transition in the Periodic Anderson Model on a Triangular Lattice"
    J. Phys. Soc. Jpn. 81,103707 (2012)
    Preprint (arXiv:1208.4691, Condensed Matter)

  122. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Disorder in the Periodic Anderson Model on a Triangular Lattice"
    J. Phys. Soc. Jpn. 80, 073704 (2011)
    Preprint(arxiv:1105.3271, Condensed Matter)

プロシーディングス

  1. ♦S. Hayami,
    "Uniaxial Distortion Effect on Magnetic Skyrmion Crystals in a Frustrated Triangular-Lattice System"
    JPS Conf. Proc. 38, 011153 (2023)

  2. ♦M. Yatsushiro and ♦S. Hayami,
    "Antisymmetric Spin–Orbit Interaction in a Locally Noncentrosymmetric CeFeSi-Type Structure"
    JPS Conf. Proc. 30, 011151 (2020)

  3. ♦S. Hayami, Y. Yanagi, M. Naka, H. Seo, Y. Motome, H. Kusunose,
    "Multipole Description of Emergent Spin–Orbit Interaction in Organic Antiferromagnet 𝜅-(BEDT-TTF)2Cu[N(CN)2]Cl"
    JPS Conf. Proc. 30, 011149 (2020)

  4. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Tracing Monopoles and Anti-monopoles in a Magnetic Hedgehog Lattice"
    JPS Conf. Proc. 30, 011010 (2020)

  5. ♦S. Hayami and Y. Motome,
    "Multiple-Q Magnetic States in Spin-Orbit Coupled Metals"
    IEEE Transactions on Magnetics 55, 1500107 (2018)

  6. Y. Yanagi, ♦S. Hayami, and H. Kusunose,
    "Theory of magnetoelectric response in Co4Nb2O9"
    Physica B: Condensed Matter 536, 107-110 (2018)

  7. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Mean-field study of correlation-induced antisymmetric spin-orbit coupling in a two-orbital honeycomb model"
    Physica B: Condensed Matter 536, 649-653 (2018)

  8. Y. Sugita, ♦S. Hayami, and Y. Motome,
    "Antisymmetric Spin-Orbit Coupling in a d-p Model on a Zigzag Chain"
    Physics Procedia 75, 419-425 (2015)

  9. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Toroidal order in a partially disordered state on a layered triangular lattice: implication to UNi4B"
    J. Phys.: Conf. Ser. 592, 012101 (2015)
    Preprint (arXiv:1409.3657, Condensed Matter)

  10. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Quantum spin Hall effect in a two-orbital model on a honeycomb lattice"
    J. Phys.: Conf. Ser. 592, 012131 (2015)
    Preprint (arXiv:1409.2142, Condensed Matter)

  11. ♦S. Hayami, T. Misawa, and Y. Motome,
    "Charge Order with a Noncoplanar Triple-Q Magnetic Order on a Cubic Lattice"
    JPS Conf. Proc. 3, 016016 (2014)
    Preprint (arXiv:1310.1982, Condensed Matter)

  12. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Carrier doping to a partially disordered state in the periodic Anderson model on a triangular lattice"
    J. Phys.: Conf. Ser. 400, 032018 (2012)
    Preprint (arXiv:1107.4401, Condensed Matter)

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