Japanese

Hayami Group

International Conference (Poster)

  1. ♦S. Kanda and ♦S. Hayami,
    "Nonlinear optical responses and their frequency dependence under chiral crystal structure",
    New Frontiers in Advanced Magnetism 2024, Sapporo, Japan (8/6-9 2024)

  2. ♦A. Kirikoshi and ♦S. Hayami,
    "Magnetoelectric effect in magnetic toroidal metal HoAgGe",
    New Frontiers in Advanced Magnetism 2024, Sapporo, Japan (8/6-9 2024)

  3. ♦A. Kirikoshi and ♦S. Hayami,
    "Magnetoelectric effect in magnetic toroidal metal HoAgGe",
    META 2024, Toyama, Japan (7/16-19 2024)

  4. ♦A. Inda, R. Oiwa, ♦S. Hayami, H. Yamamoto, and H. Kusunose,
    "Quantification of chirality based on electric toroidal monopole: Application to a twisted methane molecule",
    META 2024, Toyama, Japan (7/16-19 2024)

  5. 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,
    "Multi-step topological transitions among meron and skyrmion crystals in a centrosymmetric magnet",
    International Conference on Magnetism (ICM2024), Bologna, Italy (6/30-7/5 2024)

  6. ♦A. Inda, H. Kusunose, H. Yamamoto, and ♦S. Hayami,
    "Quantification of chirality based on electric toroidal monopole",
    MRM 2023, Kyoto, Japan (12/11-16 2023)

  7. ♦R. Yambe and ♦S. Hayami,
    "Symmetry analysis of light-induced magnetic interactions via Floquet engineering",
    Trends in MAGnetism 2023, Rome, Italy (9/4-8 2023)

  8. ♦K. Okigami, ♦R. Yambe, and ♦S. Hayami,
    "Engineering a Skyrmion Crystal in Ferromagnetic/Antiferromagnetic Bilayers Based on Magnetic Frustration Mechanism",
    Topological Matter School 2023, Donostia-San Sebastián, Spain (8/20-25 2023)

  9. ♦A. Kirikoshi and ♦S. Hayami,
    "Classification of Superconductivity in Multiorbital Systems by Multipoles",
    International Conference on Quantum Liquid Crystals 2023, Hokkaido University, Hokkaido, Japan (8/8-10 2023)

  10. ♦A. Inda and ♦S. Hayami,
    "Third-order transverse magnetic susceptibility under ferro-axial ordering",
    International Conference on Quantum Liquid Crystals 2023, Hokkaido University, Hokkaido, Japan (8/8-10 2023)

  11. ♦R. Yambe and ♦S. Hayami,
    "Floquet engineering of magnetic interactions: Understanding based on the crystal symmetry lowering",
    International Conference on Quantum Liquid Crystals 2023, Hokkaido University, Hokkaido, Japan (8/8-10 2023)

  12. ♦R. Yambe and ♦S. Hayami,
    "Sublattice-dependent Skyrmion Crystals by Itinerant Frustration",
    International Conference on Strongly Correlated Electron Systems 2023, Songdo ConvensiA, Incheon, Korea (7/2-7 2023)

  13. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic Hedgehog Lattices in Itinerant Magnets",
    International Conference on Strongly Correlated Electron Systems 2023, Songdo ConvensiA, Incheon, Korea (7/2-7 2023)

  14. K. D. Nguyen, T. Nakajima, S. Hayami, S. Gao, Y. Yamasaki, H. Sagayama, H. Nakao, R. Takagi, Y. Motome, Y. Tokura, T.-h. Arima, S. Seki,
    "Zoology of multiple-Q spin textures in centrosymmetric tetragonal magnet GdRu2Si2",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  15. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Quadruple-Q Hedgehog Lattices in Itinerant Magnets",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  16. Y. Kato, ♦S. Hayami, and Y. Motome,
    "Magnetic Field-Temperature Phase Diagrams and Spin Excitation Spectra for Topological Multiple-Q Magnetic Orders",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  17. ♦S. Hayami,
    "Skyrmion Crystals in Centrosymmetric Multi-Layer Systems",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  18. H. Yoshimochi, R. Takagi, ♦S. Hayami, J. Ju, N. D. Khanh, H. Saito, H. Sagayama, H. Nakao, T.-h. Arima, Y. Tokura, T. Nakajima, S. Seki,
    "Multiple-step topological phase transitions in a centrosymmetric tetragonal magnet GdRu2Ge2",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  19. ♦K. Okigami, ♦R. Yambe, and ♦S. Hayami,
    "Skyrmion crystal in a centrosymmetric bilayered system consisting of ferromagnetic and antiferromagnetic layers",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  20. ♦R. Yambe and ♦S. Hayami,
    "Constructing effective anisotropic spin models for multiple-Q states by symmetry argument and microscopic analysis",
    29th International Conference on Low Temperature Physics, Sapporo Convention Center, Hokkaido, Japan (8/18-24 2022)

  21. Y. Kato, ♦S. Hayami, and Y. Motome,
    "Magnetic field-temperature phase diagrams and spin excitation spectra for topological multiple-𝑸 magnetic orders",
    International Conference on Strongly Correlated Electron Systems 2022 (SCES2022), Amsterdam, The Netherlands (7/24-29 2022)

  22. ♦K. Okigami, ♦R. Yambe, and ♦S. Hayami,
    "Engineering skyrmion crystal in centrosymmetric ferromagnetic/antiferromagnetic bilayers",
    International Conference on Strongly Correlated Electron Systems 2022 (SCES2022), Amsterdam, The Netherlands (7/24-29 2022)

  23. ♦R. Yambe and ♦S. Hayami,
    "Classification of anisotropic exchange interactions in momentum space toward understanding multiple-Q instability",
    International Conference on Strongly Correlated Electron Systems 2022 (SCES2022), Amsterdam, The Netherlands (7/24-29 2022)

  24. Y. Kato, ♦S. Hayami, and Y. Motome,
    "Magnetic field-temperature phase diagrams and spin excitation spectra for multiple-Q magnetic orders",
    11th International Conference on Highly Frustrated Magnetism 2022 (HFM2022), O15, Paris, France (6/20-24 2022)

  25. ♦R. Yambe and ♦S. Hayami,
    "Effective anisotropic spin model in momentum space: Application to search for multiple-Q orderings,
    11th International Conference on Highly Frustrated Magnetism 2022 (HFM2022), T31, Paris, France (6/20-24 2022)

  26. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Quadruple-Q magnetic hedgehog lattices in itinerant magnets",
    11th International Conference on Highly Frustrated Magnetism 2022 (HFM2022), T30, Paris, France (6/20-24 2022)

  27. ♦R. Yambe and ♦S. Hayami,
    "Skyrmion crystals in itinerant trigonal magnets",
    International Conference on Frustration, Topology, and Spin Textures, P8, online (12/22-23 2021)

  28. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Quadruple-Q Hedgehog Lattice in a Centrosymmetric Metal",
    International Conference on Frustration, Topology, and Spin Textures, P15, online (12/22-23 2021)

  29. H. Hanate, S. Kawano, T. Hasegawa, S. Tsutsui, ♦S. Hayami, and K. Matsuhira,
    "Inelastic X-ray Scattering Study of the Hidden Order at 105 K in Ca5Ir3O12",
    The International Conference on SCES 2020, online (9/27-10/1 2021)

  30. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal",
    DMI2021 "VI International Workshop Dzyaloshinskii-Moriya Interaction and Exotic Spin Structures", online (9/6-10 2021)

  31. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Hedgehog Lattice in a Centrosymmetric Cubic Metal",
    International Conference on Quantum Liquid Crystals 2021, online, Japan (5/11-13 2021)

  32. M. Naka, ♦S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, and H. Seo,
    "Spin current generation in collinear antiferromagnets",
    International Conference on Quantum Liquid Crystals 2021, online, Japan (5/11-13 2021)

  33. M.-T. Suzuki, T. Nomoto, R. Arita, Y. Yanagi, ♦S. Hayami, H. Kusunose, V. T. N. Huyen, K. Yamauchi, and T. Oguchi,
    "Multipole expansion for magnetic structures and its application to the study of anomalous Hall effect in antiferromagnets",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  34. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic Hedgehog Crystals in Noncentrosymmetric Metals",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  35. ♦R. Yambe and ♦S. Hayami,
    "Noncoplanar Double-Q State in d-p Model with Strong Spin-Charge Coupling",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  36. ♦M. Yatsushiro and ♦S. Hayami,
    "Odd-Parity Multipole Order in CeCoSi",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  37. ♦T. Matsumoto and ♦S. Hayami,
    "Nonreciprocal magnon by symmetric anisotropic exchange interaction on a honeycomb antiferromagnet ",
    J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics, Kobe University, Hyogo, Japan (9/17-21 2019)

  38. ♦M. Yatsushiro and ♦S. Hayami,
    "Crosscorrelation phenomena by odd-parity multipoles in CeCoSi",
    J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics, Kobe University, Hyogo, Japan (9/17-21 2019)

  39. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Numerical study of magnetic hedgehog lattices in itinerant electron systems",
    V International Workshop Dzyaloshinskii-Moriya Interaction and Exotic Spin Structures, Petrozavodsk, Russia (7/8-12 2019)

  40. M. Naka, ♦S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, and H. Seo
    "Organic antiferromagnet as a spin current generator",
    International Conference on Frontiers of Correlated Electron Sciences, P43, Bunkyo-ku, Tokyo, Japan (5/29-31 2019)

  41. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Numerical study of magnetic hedgehog crystals in itinerant chiral magnets",
    International Conference on Frontiers of Correlated Electron Sciences, P50, Bunkyo-ku, Tokyo, Japan (5/29-31 2019)

  42. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Numerical study of 3Q and 4Q hedgehog crystals in 3Dspin-charge coupled systems",
    CEMS Symposium on Emergent Quantum Materials, P16, Bunkyo-ku, Tokyo, Japan (5/22-24 2019)

  43. Y. Yanagi, ♦S. Hayami, and H. Kusunose,
    "Theoretical study on magnetoelectric response in the honeycomb antiferromagnet Co4Nb2O9",
    J-Physics 2017: International Workshop on Multipole Physics and Related Phenomena, P-21, Hachimantai, Iwate, Japan (9/25-28 2017)

  44. M. Yantsushiro and ♦S. Hayami,
    "Magnetic ordering in the d-p model with spin-orbit couplings on a zigzag chain",
    J-Physics 2017: International Workshop on Multipole Physics and Related Phenomena, P-46, Hachimantai, Iwate, Japan (9/25-28 2017)

  45. Y. Yanagi, ♦S. Hayami, and H. Kusunose,
    "Magnetoelectric response in Co4Nb2O9",
    The International Conference on SCES 2017, We-2-44, Prague, Czech (7/17-21 2017)

  46. R. Ozawa, ♦S. Hayami, and Y. Motome,
    "Large-scale simulation for formation of skyrmion srystals with a high topological number in itinerant magnets",
    1st International Symposium on Research and Education of Computational Science (RECS), Hongo, Tokyo (11/29-30 2016)

  47. R. Ozawa, ♦S. Hayami, K. Barros, G. W. Chern, Y. Motome, and C. D. Batista,
    "Vortex Crystals with Chiral Stripes in Itinerant Magnets",
    The International Conference on SCES, Mo-P051, Hangzhou, China (5/8-13 2016)

  48. R. Ozawa, ♦S. Hayami, K. Barros, G. W. Chern, Y. Motome, and C. D. Batista,
    "Vortex Crystals with Chiral Stripes in Itinerant Magnets",
    International USMM & CMSI Workshop: Frontiers of Materials and Correlated Electron Science -from Bulk to Thin Films and Interfaces, P-26, Hongo, Tokyo, Japan (1/5-9 2016)

  49. Y. Sugita, ♦S. Hayami, and Y. Motome,
    "Exitionic Multipole Order in a d-p Model with Parity Mixing",
    TMU International Symposium 2015 "New Quantum Phases Emerging from Novel Crystal Structure", P33, Tokyo Metropolitan University, Hachioji, Tokyo, Japan (9/24-25 2015)

  50. ♦S. Hayami, H. Kusunose and Y. Motome,
    "Spontaneous parity breaking by electronic orders in spin-orbit coupled systems",
    Novel States in Spin-Orbit Coupled Quantum Matter: from Models to Materials, The Kavli institude for Theoretical Physics, University of California, Santa Barbara, United States (7/27-31 2015)

  51. R. Ozawa, ♦S. Hayami, M. Udagawa, Y. Motome, K. Barros, G. W. Chern, and C. D. Batista,
    "Meron crystals with spin scalar chiral stripes",
    20th International Conference on Magnetism (ICM2015), FR.E-P36, Barcerona, Spain (7/5-10 2015)

  52. Y. Sugita, ♦S. Hayami, and Y. Motome,
    "Exitionic Multipole Order in a d-p Model with Parity Mixing",
    20th International Conference on Magnetism (ICM2015), TU.A-P81, Barcerona, Spain (7/5-10 2015)

  53. R. Ozawa, K. Barros, ♦S. Hayami, G. W. Chern, M. Udagawa, Y. Motome, and C. D. Batista,
    "Meron crystals with scalar chiral stripes",
    Workshop on "Topologial Magnets", P11, RIKEN, Wako, Saitama, Japan (5/25-27 2015)

  54. Y. Sugita, ♦S. Hayami, and Y. Motome,
    "Exitionic Multipole Order in a d-p Model with Parity Mixing",
    The 2nd ISSP-MPIPKS Joint Workshop "Dyanmics of Strongly Correlated Systems" (DSCS2015), PS-14, ISSP, Kashiwa, Chiba, Japan (3/30-31 2015)

  55. R. Ozawa, ♦S. Hayami, M. Udagawa, Y. Motome, K. Barros, G. W. Chern, and C. D. Batista,
    "Meron Crystals with Spin Scalar Chiral Stripes",
    The 2nd ISSP-MPIPKS Joint Workshop "Dyanmics of Strongly Correlated Systems" (DSCS2015), PS-18, ISSP, Kashiwa, Chiba, Japan (3/30-31 2015)

  56. Y. Motome and ♦S. Hayami,
    "Hidden frustration in multiple-Q ordered metals",
    The International Conference on Highly Frustrated Magnetism 2014, We-220, Cambridge, UK, (7/7-11 2014)

  57. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous parity breaking by electronic orders in spin-orbit coupled systems",
    The International Conference on SCES, We-220, Grenoble, France, (7/7-11 2014)

  58. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Multipole ordering by local parity mixing",
    The International Conference on SCES, We-221, Grenoble, France (7/7-11 2014)

  59. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous toroidal order in metals",
    The New Generation in Strongly Correlated Electron Systems 2014, 16th, Nice, France (6/16-20 2014)

  60. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous toroidal order in metals",
    The OIST International Workshop on Novel Quantum Materials and Phases, 15th-P22, OIST, Kunigami District, Okinawa, Japan (5/14-17 2014)

  61. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "3D Dirac electrons on a cubic lattice with noncoplanar multiple-Q order",
    The OIST International Workshop on Novel Quantum Materials and Phases, 14th-P7, OIST, Kunigami District, Okinawa, Japan (5/14-17 2014)

  62. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous Toroidal Order in Metals",
    The 6th Indo-Japan Seminar Physics and Design of Multi-Functional Correlated Materials, P27, Univeristy of Tokyo, Bunkyo, Tokyo, Japan (3/24-25 2014)

  63. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Toroidal Order in Metals on Hexagonal Lattices",
    FIRST International Symposium on Topological Quantum Technology, P48, University of Tokyo, Bunkyo, Tokyo, Japan (1/27-30 2014)

  64. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Exploring topological insulators under a triple-Q magnetic order",
    RIKEN-APW joint workshop "Highlights in condensed matter physics", R043, RIKEN, Wako, Saitama, Japan, (1/23-25 2014)

  65. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Toroidal ordering in metals: band shift, magnetotransport, and magnetoelectric effect",
    The FIRST-QS2C Workshop on "Emergent Phenomena of Correlated Materials", P52, Shinagawa, Tokyo, Japan, (11/13-16 2013)

  66. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "3D Dirac Electrons and Peculiar Surface States on a Cubic Lattice",
    International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries 2013, P-08, Okinawa, Japan (10/22-26 2013)

  67. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Three-dimensional Dirac Electrons with Noncoplanar Multiple-Q Order in a Kondo Lattice Model",
    The International Conference on SCES, 8P-226, University of Tokyo, Bunkyo, Tokyo, Japan (8/5-9 2013)

  68. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Three-dimensional Dirac Electrons with Noncoplanar Multiple-Q Order in a Cubic Lattice System",
    QS2C Theory Forum: International Symposium on “Strongly Correlated Quantum Science”, P31, University of Tokyo, Bunkyo, Tokyo, Japan (1/26-29 2013)

  69. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Disorder and Metal-Insulator Transition in the Periodic Anderson Model on a Triangular Lattice",
    The Fourth International Workshop on the Dual Nature of f-Electrons, P-16, Himeji, Hyogo, Japan (7/4-6 2012)

  70. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Disorder in a Frustrated Periodic Anderson Model",
    Novel Quantum States in Condensed Matter 2011 Correlation, Frustration and Topology, PS-B-2, YITP, Kyoto University, Kyoto, Japan (11/7-12/9 2011)

  71. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Disorder in the Periodic Anderson Model on a Triangular Lattice",
    26th International Conference on Low Temperature Physics, 13P-C025, Beijing, China (8/10-17 2011)

Domesitc Conference, JPS Meeting (Poster)

  1. ♦A. Kirikoshi, ♦S. Hayami,
    "Magnetoelecric effect in antiferro-/ferri-magnetic toroidal metal",
    Transformative Research Areas (A) "Asymmetric Quantum Matters" FY2024 Area General Meeting/Public Research Kickoff Meeting, Higashi Hiroshima Arts & Culture Hall Kurara, Hiroshima (5/29-31 2024)

  2. ♦S. Kanda, ♦S. Hayami,
    "Nonlinear optical response originating from chiral-type antisymmetric spin-orbit interaction",
    Transformative Research Areas (A) "Asymmetric Quantum Matters" FY2024 Area General Meeting/Public Research Kickoff Meeting, Higashi Hiroshima Arts & Culture Hall Kurara, Hiroshima (5/29-31 2024)

  3. ♦A. Inda, ♦S. Hayami,
    "Quantitative analysis of chirality based on electric toroidal monopole",
    Transformative Research Areas (A) "Asymmetric Quantum Matters" FY2024 Area General Meeting/Public Research Kickoff Meeting, Higashi Hiroshima Arts & Culture Hall Kurara, Hiroshima (5/29-31 2024)

  4. R. Oiwa, ♦A. Inda, ♦S. Hayami, T. Nomoto, R. Arita, and H. Kusunose,
    "Symmetry-adapted closest Wannier tight-binding models",
    FYR05 QLC meeting, The University of Tokyo, ISSP, Chiba (12/26-28 2023)

  5. S. Okumura, ♦S. Hayami, Y. Kato and Y. Motome,
    "Effects of Q-dependent Anisotropy on Magnetic Hedgehog Lattices in Centrosymmetric Systems",
    FYR05 QLC meeting, The University of Tokyo, ISSP, Chiba (12/26-28 2023)

  6. ♦A. Inda and ♦S. Hayami,
    "Nonlinear transverse magnetic susceptibility under ferroaxial ordered state",
    Grant-in-Aid for Transformative Research Areas (A), "[in Japanese] アシンメトリが彩る量子物質の可視化・設計・創出", Topical meeting, Hokkaido University, Hokkaido (8/30-31 2023)

  7. ♦A. Kirikoshi and ♦S. Hayami,
    "Rotational Response Induced by Electric Toroidal Dipole",
    Grant-in-Aid for Transformative Research Areas (A), "[in Japanese] アシンメトリが彩る量子物質の可視化・設計・創出", Topical meeting, Hokkaido University, Hokkaido (8/30-31 2023)

  8. ♦R. Yambe and ♦S. Hayami,
    "A plethora of skyrmoin crystal phases in honeycomb itinerant magnets",
    ISSP workshop "[in Japanese] カイラル物質科学の新展開", ISSP, Chiba (12/22-24 2022)

  9. ♦S. Hayami,
    "Skyrmion crystals in centrosymmetric systems with staggered Dzyaloshinskii-Moriya interaction",
    FYR04 QLC meeting, Nagoya University (12/8-10 2022)

  10. ♦A. Kirikoshi, ♦S. Hayami,
    "Microscopic Mechanism for Intrinsic Nonlinear Hall Effect in Noncollinear Antiferromagnetic Metals",
    FYR04 QLC meeting, Nagoya University (12/8-10 2022)

  11. ♦K. Okigami, ♦R. Yambe, ♦S. Hayami,
    "Engineering a Skyrmion Crystal in Ferromagnetic/Antiferromagnetic Bilayers Based on Magnetic Frustration Mechanism",
    FYR04 QLC meeting, Nagoya University (12/8-10 2022)

  12. ♦R. Yambe, ♦S. Hayami,
    "Sublattice-dependent skyrmion crystals in an itinerant honeycomb magnet",
    FYR04 QLC meeting, Nagoya University (12/8-10 2022)

  13. ♦A. Kirikoshi and ♦S. Hayami,
    "Intrinsic nonlinear Hall effect in antiferromagnetic metals",
    Asymmetric Quantum 1st conference, Osaka University, PS03 (8/9-10 2022)

  14. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Magnetic Monopole Crystals in Chiral Metals: Stabilization Mechanism and Field-driven Topological Transitions",
    FYR02 QLC meeting, online meeting (12/21-25 2020)

  15. ♦R. Yambe and ♦S. Hayami,
    "Skyrmion Crystals in Centrosymmetric Itinerant Magnets without Horizontal Mirror Plane",
    FYR02 QLC meeting, online meeting (12/21-25 2020)

  16. ♦T. Matsumoto and ♦S. Hayami,
    "Nonreciprocal magnons due to magnetic toroidal multipoles in noncentrosymmetric magnets",
    FYR02 QLC meeting, online meeting (12/21-25 2020)

  17. ♦M. Yatsushiro and ♦S. Hayami,
    "Electric toroidal quadrupole order breaking the spatial inversion symmetry in CeCoSi",
    FYR02 QLC meeting, online meeting (12/21-25 2020)

  18. ♦M. Yatsushiro and ♦S. Hayami,
    "Electric field gradient at Co site under antiferroquadrupole orderings in CeCoSi",
    J-Physics Annual Meeting FY2019, Kobe University, Hyogo (1/6-8 2020)

  19. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Chiral 3Q and 4Q hedgehog lattices in 3D spin-charge coupled systems",
    JSPS Core-to-Core Topical Meeting "Symposium on fundamental properties of chiral materials", Kanda Sanso, Hiroshima (1/27-29 2019)

  20. S. Okumura, ♦S. Hayami, Y. Kato, and Y. Motome,
    "Numerical study of topological spin textures in 3D spin-charge coupled systems",
    The 4th Annual Meeting "Topological Materials Science", Nagoya University, Aichi (1/22-24 2019)

  21. ♦T. Matsumoto and ♦S. Hayami,
    "Toroidal multipole and its nonreciprocal magnon excitations in breathing kagome magnets",
    J-Physics: Tropical Topical Meeting, Ryukyu University, Okinawa (12/13-14 2018)

  22. ♦T. Matsumoto and ♦S. Hayami,
    "Toroidal multipole and its nonreciprocal magnon excitations in breathing kagome magnets",
    Frontiers of spin physics, Kyoto University, Kyoto (10/31-11/2 2018)

  23. ♦M. Yatsushiro and ♦S. Hayami,
    "Toroidal multipoles induced under the odd-parity crystalline electric field and magnetoelectric effect",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 10aPS-20, Doshisha University, Kyoto (9/9-12 2018)

  24. ♦T. Matsumoto and ♦S. Hayami,
    "Nonreciprocal magnon excitations on a breathing kagome lattice",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 9aPS-95, Doshisha University, Kyoto (9/9-12 2018)

  25. ♦S. Hayami and H. Kusunose,
    "Hybrid multipoles in orbital hybridization",
    J-Physics Annual Meeting 2018, University of Tokyo (ISSP), Chiba (3/15-17 2018)

  26. A. Oyamada, E. Yamamoto, Y. Haga, ♦S. Hayami, H. Kusunose, and Y. Motome,
    "anomalous Hall effect in a triangular-lattice antiferromagnet UNi4B",
    Japan Physical Society Meeting, 71st Annual Meeting, 17pK-PS-23, Osaka University,　Osaka (3/17-20 2017)

  27. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Emergent spin-valley-orbital physics by spontaneous parity breaking",
    J-Physics Annual Meeting 2016, P18, Hokkaido University, Hokkaido (5/26-28 2016)

  28. A. Oyamada, E. Yamamoto, Y. Haga, ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Weak ferromagnetism and anomalous Hall effect in a triangular-lattice antiferromagnet UNi4B",
    Japan Physical Society Meeting, 71st Annual Meeting, 22aPS-48, Tohoku Gakuin University, Miyagi (3/19-22 2016)

  29. R. Ozawa, ♦S. Hayami, Kipton Barros, Gia-Wei Chern, Y. Motome, and Cristian D. Batista,
    "Vortex Crystals with Chiral Stripes in Itinerant Magnets",
    9th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science, P-47, University of Tokyo, Tokyo (11/13-15 2015)

  30. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous parity breaking in spin-orbital coupled systems",
    9th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science, P-34, University of Tokyo, Tokyo (11/13-15 2015)

  31. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Asymmetric magnon excitations induced by extended toroidal multipoles",
    9th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science, P-34, University of Tokyo, Tokyo (11/13-15 2015)

  32. A. Oyamada, E. Yamamoto, Y. Haga, ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Anomalous Hall effect in the ordered state of a triangular-lattice antiferromagnet UNi4B",
    Japan Physical Society Meeting, 2015 Autumn Meeting, 17aPS-129, Kansai University, Osaka (9/16-19 2015)

  33. ♦S. Hayami, H. Kusunose, and Y. Motome,
    "Torodial ordering in metals: band shift, magnetotransport, and magnetoelectric effect",
    7th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science, P2-6, University of Tokyo, Bunkyo, Tokyo (12/1-2 2013)

  34. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Possibility of topological insulator under triple-Qmagnetic ordering",
    7th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science , P2-7, University of Tokyo, Bunkyo, Tokyo (12/1-2 2013)

  35. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Multiple-Q ordering and charge ordering in cubic lattice systems",
    Emergence of Heavy Electrons and Their Ordering, 4th workshop, PS89, Tokyo Institute of Technology, Tokyo (1/12-14 2013)

  36. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Noncoplanar multiple-Q magnetic ordering with three-dimensional Dirac electrons in the periodic Anderson model on a cubic lattice",
    6th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science, P1-5, University of Tokyo, Tokyo (11/27-28 2012)

  37. ♦S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Multiple-Q magnetic ordering with charge ordering and Dirac electrons in the periodic Anderson model on a cubic lattice",
    Physics of Quantum Spin Systems, PS-A11, YITP, Kyoto University, Kyoto (11/12-14 2012)

  38. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the periodic Anderson model on a triangular lattice -effecs of dopoing, magnetic field, and spin anisotropy-",
    Meeting "Frustrated system", P11, Osaka University, Suita, Osaka (1/6-8 2012)

  39. ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the periodic Anderson model on a triangular lattice",
    7th meeting "Frustration and spin, charge, orbital, and lattice degrees of freedom」, P16, Hikone view Hotel, Shiga, (7/1-2 2011)

  40. [poster] ♦S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the periodic Anderson model on a triangular lattice",
    "Emergence of Heavy Electrons and Their Ordering" 3rd workshop, PS117, ISSP, Kashiwa, Chiba (6/23-25 2011)