Presentation

International Conference

  1. [Invited, oral] S. Hayami,
    "Classification of Atomic-Scale Multipoles under Crystallographic Point Groups",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  2. [Invited, oral] S. Hayami,
    "Momentum-Dependent Spin Splitting by Collinear Antiferromagnets without Atomic Spin-Orbit Coupling",
    J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics, Kobe University, Hyogo, Japan (9/17-21 2019)

  3. [Invited Lecture, oral] S. Hayami,
    "Augmented multipoles and cross-correlated couplings",
    J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics, Tutorial session, Kobe University, Hyogo, Japan (9/17-21 2019)

  4. [Invited, oral] S. Hayami,
    "Neel- and Bloch-type magnetic vortices in Rashba metals",
    SPIE Optics + Photonics 2019, Spintronics XII 11090-69, San Diego Convention Center, California, United States (8/11-15 2019)

  5. [Invited, oral] S. Hayami,
    "Magnetic vortex and skrymion crystals in frustrated magnets",
    International workshop Frontiers in Strongly Correlated Electron System, Hokkaido University, Hokkaido, Japan (10/19-20 2017)

  6. [Invited, oral] S. Hayami,
    "Emergent odd-parity multipoles by spontaneous parity breaking",
    J-Physics 2017: International Workshop on Multipole Physics and Related Phenomena, Hachimantai, Iwate, Japan (9/25-28 2017)

  7. [Invited, oral] S. Hayami,
    "Vortex and Skyrmion Crystals in Frustrated Itinerant Magnets",
    Skyrmionics: Materials, Phenomena and Applications, Santa Fe, New Mexico, United States (8/7-10 2017)

  8. [Invited, oral] S. Hayami,
    "Spontaneous cluster multipoles by local parity mixing",
    The International Conference on SCES 2017, S30, Prague, Czech (7/17-21 2017)

  9. [Invited, oral] S. Hayami,
    "Emergent spin-valley-orbital physics by cluster multipoles",
    EMN Bali Meeting 2017, A15, Kuta, Bali, Indonesia (6/21-24 2017)

  10. [Invited, oral] S. Hayami,
    "Toroidal order in metals without local inversion symmetry",
    Trends in Theory of Correlated Materials, M-9, Shibuya-Campus, Aoyama Gakuin University, Tokyo, Japan (10/5-8 2014)

  11. [poster] 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)

  12. [poster] 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)

  13. [poster] 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)

  14. [poster] 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)

  15. [poster] 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)

  16. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Toroidal ordering in metals: band shift, magnetotransport, and magnetoelectric effect",
    APS March Meeting 2014, Y7.00013, Denver, Colorado, United States (3/3-7 2014)

  17. [poster] 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)

  18. [poster] 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)

  19. [poster] 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)

  20. [poster] 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)

  21. [oral] S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "3D Dirac Electrons on a Cubic Lattice with Noncoplanar Multiple-Q Order",
    APS March Meeting 2013, G13.00004, Baltimore, Maryland, United States (3/18-22 2013)

  22. [poster] 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)

  23. [oral] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disorder in the periodic Anderson model on a triangular lattice",
    APS March Meeting 2012, T16.00006, Boston, Massachusetts, United States (2/27-3/2 2012)

  24. [poster] 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)

  25. [poster] 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)

  26. [poster] 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)

Collaborators

  1. [poster] ○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)

  2. [poster] ○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)

  3. [oral] ○M. Naka, S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, and H. Seo
    "Organic antiferromagnet as a spin current generator",
    The International Conference on SCES 2019, Okayama University, Okayama, Japan (9/23-28 2019)

  4. [poster] ○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)

  5. [poster] ○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)

  6. [poster] ○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)

  7. [poster] ○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)

  8. [poster] ○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)

  9. [poster] ○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)

  10. [poster] ○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)

  11. [poster] ○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)

  12. [poster] ○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)

  13. [poster] ○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)

  14. [poster] ○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)

  15. [poster] ○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)

  16. [poster] ○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)

  17. [oral] ○R. Ozawa, S. Hayami, K. Barros, G. W. Chern, Y. Motome, and C. D. Batista,
    "Vortex Crystals with Chiral Stripes in Itinerant Magnets",
    APS March Meeting 2016, C5.00012, Baltimore, Maryland, United States (3/14-18 2016)

  18. [poster] ○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)

  19. [poster] ○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)

  20. [poster] 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)

  21. [poster] ○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)

  22. [poster] ○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)

  23. [poster] ○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)

  24. [poster] ○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)

  25. [poster] ○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)

  26. [poster] ○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)

  27. [poster] 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)

  28. [poster] 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)

  29. [oral] ○Y. Motome, K. Nakamikawa, S. Hayami, M. Udagawa, and Y. Yamaji,
    "Frustration, competing interactions & partial disorder in Kondo lattice systems",
    The International Conference on Highly Frustrated Magnetism (HFM 2012), T1-3, McMaster University, Hamilton, ON, Canada (6/4-8 2012)

Japanese Domestic Conference

  1. [oral] S. Hayami,
    "Relation between microscopic multipole degrees of freedom and spin-split band structures",
    J-Physics Mini-Workshop in Sapporo, Hokkaido University, Hokkaido (7/22-23 2019)

  2. [Invited, oral] S. Hayami,
    "Microscopic theoretical study on toroidal moment and cross-correlated electronic properties",
    Japan Physical Society Meeting, 74th Annual Meeting, 50012-2, Kyusyu University, Fukuoka (3/14-17 2019)

  3. [oral] S. Hayami,
    "Augmented multipoles by bond degree of freedom –example of electric toroidal quadrupole ordering in Cd2Re2O7–",
    J-Physics Topical Meeting “Progress and Future Prospects of Research on Augmented Multipoles and Related Phenomena”, Meiji University, Tokyo (1/21-22 2019)

  4. [oral] S. Hayami,
    "Augmented Multipoles and Cross-Correlated Couplings",
    J-Physics Topical Meeting “Progress and Future Prospects of Research on Augmented Multipoles and Related Phenomena”, Meiji University, Tokyo (1/21-22 2019)

  5. [Invited, oral] S. Hayami,
    "Skyrmion crystal phase in frustrated magnetisms",
    Frontiers of spin physics, Kyoto University, Kyoto (10/31-11/2 2018)

  6. [oral] S. Hayami, M. Yatsushiro, Y. Yanagi, H. Kusunose,
    "Classification of atomic-scale multipoles under crystallographic point groups",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 10pB203-10, Doshisha University, Kyoto (9/9-12 2018)

  7. [Invited, oral] S. Hayami,
    "Augmented Multipoles and Cross-Correlated Couplings",
    Japan Physical Society Meeting, 2018 Autumn Meeting Joint Symposium, 9pB105-2, Doshisha University, Kyoto (9/9-12 2018)

  8. [oral] S. Hayami, Y. Yanagi, H. Kusunose, Y. Motome,
    "Possibility of electric toroidal quadrupole ordering in Cd2Re2O7",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 9aB206-7, Doshisha University, Kyoto (9/9-12 2018)

  9. [oral] S. Hayami,
    "Electric toroidal multipoles and cross-correlated couplings",
    1st ETQ meeting「Multipole orderings and superconductivity」, Hokkaido University, Hokkaido (8/8-9 2018)

  10. [Invited, oral] S. Hayami,
    "Material design based on toroidal multipole degrees of freedom",
    J-Physics Topical Meeting, ‘Monodukuri’ Series No. 3 “Forefront of Materials Search”, Tokyo Metropolitan University, Tokyo (8/6-7 2018)

  11. [oral] S. Hayami,
    "Cross-correlated Couplings by Toroidal Multipoles through Local Orbital Hybridizations",
    JJ-Physics Annual Meeting FY2018, Tohoku University, Miyagi (5/24-26 2018)

  12. [oral] , H. Kusunose, and Y. Motome,
    "Odd-parity multipoles and magnetoelectric effects in 5d transition metal oxides AOsO4(A=K, Rb, Cs)",
    Japan Physical Society Meeting, 73rd Annual Meeting, Tokyo University of Science, Chiba (3/22-25 2018)

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

  14. [Invited, oral] S. Hayami
    "Hybrid multipoles in orbital hybridization",
    Meeting「Multipole responses in noncentrosymmetric systems」, Hokkaido University, Hokkaido (1/23 2018)

  15. [oral] S. Hayami
    "Hybrid multipoles in hybridized orbital systems",
    The 7th Metting「Frontiers of Strongly Correlated Electron Systems」, imagine hotel & resort , Hokkaido (12/4-6 2017)

  16. [oral] S. Hayami and Y. Motome,
    "Multiple-Q magnetic orderings in the Kondo lattice model with the spin-orbit coupling",
    Japan Physical Society Meeting, 2017 Autumn Meeting, 23aE20-7, Iwate University, Iwate (9/21-24 2017)

  17. [oral] S. Hayami and Y. Motome,
    "Effect of magnetic anisotropy on skyrmion crystal in the Kondo lattice model",
    Japan Physical Society Meeting, 2017 Autumn Meeting, 23aE20-6, 岩手大学, 岩手県 (9/21-24 2017)

  18. [oral] S. Hayami, H. Kusunose,
    "Toroidal multipoles in local parity mixing systems",
    Japan Physical Society Meeting, 2017 Autumn Meeting, 22aF11-11, 岩手大学, 岩手県 (9/21-24 2017)

  19. [Invited, oral] S. Hayami,
    "Skyrmion crystals in magnetic insulators and metals",
    238th Meeting of Enreisou, Hokkaido University, Hokkaido (7/14 2017)

  20. [Invited, oral] S. Hayami,
    "Magnetic vortex induced by effective spin interactions in the Kondo lattice model",
    J-Physics Topical Meeting, Hirosaki University, Aomori (5/20-21 2017)

  21. [oral] S. Hayami, R. Ozawa, Y. Motome,
    "Skyrmion crystal phase induced by effective spin-spin interactions in the Kondo lattice model",
    Japan Physical Society Meeting, 72nd Annual Meeting, 19pC24-8, Osaka University, Osaka (3/17-20 2017)

  22. [oral] S. Hayami
    "Multiple-Q magnetic ordering in localized spin and itinerant electron systems",
    The 6th Metting「Frontiers of Strongly Correlated Electron Systems」, Katsuura Kanko Hotel, Wakayama (12/20-22 2016)

  23. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Emergent spin-valley-orbital physics by spontaneous parity breaking",
    Japan Physical Society Meeting, 2016 Autumn Meeting, 14pKE-3, Kanazawa University, Ishikawa (9/13-16 2016)

  24. [oral] S. Hayami, S.-Z. Lin, and C. D. Batista,
    "Bubble and skyrmion crystals in frustrated magnets with easy-axis anisotropy",
    Japan Physical Society Meeting, 2016 Autumn Meeting, 13aAA-3, Kanazawa University, Ishikawa (9/13-16 2016)

  25. [oral] S. Hayami, S.-Z. Lin, and C. D. Batista,
    "Magnetic Vortex Induced by Nonmagnetic Impurity in Frustrated Magnets",
    Japan Physical Society Meeting, 2016 Autumn Meeting, 13aAA-2, Kanazawa University, Ishikawa (9/13-16 2016)

  26. [poster] 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)

  27. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Collective excitations in toroidal ordered systems",
    Japan Physical Society Meeting, 70st Annual Meeting, 23pBF-13, Waseda Univesity, Tokyo (3/21-24 2015)

  28. [Invited, oral] S. Hayami,
    [Japanese]"Peculiar magnetism and electronic states in itinerant electron systems -multiple-Q ordering, Dirac electrons, and magnetic topological insulators-",
    日本物理学会北海道支部講演会, Hokkaido University, Hokkaido (10/28 2014)

  29. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Magnetic ordering in an extended Kondo lattice model with local parity mixing",
    Japan Physical Society Meeting, 2014 Autumn Meeting, 9aBG-6, Chubu University, Aichi (9/7-10 2014)

  30. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Spontaneous parity breaking in spin-orbital coupled systems",
    Japan Physical Society Meeting, 2014 Autumn Meeting, 9aBG-5, Chubu University, Aichi (9/7-10 2014)

  31. [oral] S. Hayami and Y. Motome,
    "A stabilization mechanism of noncollinear and noncoplanar magnetic ordering in itinerant electron systems",
    Japan Physical Society Meeting, 2014 Autumn Meeting, 9aBG-4, Chubu University, Aichi (9/7-10 2014)

  32. [oral] S. Hayami, H. Kusunose, and Y. Motome,
    "Torodial ordering in metals: band shift, magnetotransport, and magnetoelectric effect",
    Japan Physical Society Meeting, 69st Annual Meeting, 29pAY-2, Tokai University, Kanagawa (3/27-30 2014)

  33. [poster] 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. [poster] 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. [oral] S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Monte Carlo analysis of multiple-Q magnetic ordering in the classical Kondo lattice model on a cubic lattice",
    Japan Physical Society Meeting, 2013 Autumn Meeting, 27pKF-5, Tokushima University, Tokushima (9/25-28 2013)

  36. [oral] S. Hayami, T. Misawa, Y. Yamaji, and Y. Motome,
    "Noncoplanar multiple-Q magnetic ordering with three-dimensional Dirac electrons on a cubic lattice",
    Japan Physical Society Meeting, 68st Annual Meeting, 26aXJ-11, Hiroshima University, Hiroshima (3/26-29 2013)

  37. [poster] 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)

  38. [poster] 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)

  39. [poster] 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)

  40. [oral] S. Hayami, T. Misawa, and Y. Motome,
    "Multiple-Q magnetic orderng and charge ordering in the periodic Anderson model",
    Japan Physical Society Meeting, 2012 Autumn Meeting, 21aFG-12, Yokohama National University, Kanagawa (9/18-21 2012)

  41. [oral] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state induced by magnetic field and spin anisotropy in the periodic Anderson model on a triangular lattice",
    Japan Physical Society Meeting, 2012 Autumn Meeting, 20pGB-10, Yokohama National University, Kanagawa (9/18-21 2012)

  42. [oral] S. Hayami,
    "Partial disordered state in the periodic Anderson model on a triangular lattice",
    第8回 2012 G-COE RA 自主研究会, 湯沢グランドホテル, Niigata, (7 2012)

  43. [oral] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state near commesulate fillings in the periodic Anderson model on a triangular lattice",
    Japan Physical Society Meeting, 67st Annual Meeting, 26pYB-7, Kwansei Gakuin University, Hyogo (3/24-27 2012)

  44. [poster] 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-",
    「フラストレート系」特定領域, 最終成果報告会, P11, Osaka University, Suita, Osaka (1/6-8 2012)

  45. [oral] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the frustrated periodic Anderson model",
    Japan Physical Society Meeting, 2011 Autumn Meeting, 22pGB-8, Toyama University, Toyama (9/21-24 2011)

  46. [poster] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the periodic Anderson model on a triangular lattice",
    7th meeting「フラストレーションとスピン・電荷・軌道・格子自由度」, P16, Hikone view Hotel, Shiga, (7/1-2 2011)

  47. [poster] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial disordered state in the periodic Anderson model on a triangular lattice",
    新学術領域研究「重い電子系の形成と秩序化」3rd workshop, PS117, ISSP, Kashiwa, Chiba (6/23-25 2011)

  48. [oral] S. Hayami, M. Udagawa, and Y. Motome,
    "Partial Kondo Screening in the frustrated periodic Anderson model",
    Japan Physical Society Meeting, 66st Annual Meeting, 26aEF-8, Niigata University, Niigata (3 2011 [the meeting is cancelled by earthquake])

Collaborators

  1. [oral] ○S. Okumura, S. Hayami, Y. Kato, and Y. Motome,
    "Numerical study on magnetic hedgehog lattices in noncentrosymmetric metals",
    JSPS Core-to-Core Program International meeting “Core-to-Core Final Meeting in Jaca (2019)", Jaca, Spain (9/2-6 2019)

  2. [oral] S. Okumura, S. Hayami, Y. Kato, Y. Motome,
    "Numerical study on multiple-Q magnetic hedgehog lattices in 3D itinerant electron systems",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 11aK23-7, Gifu University, Gifu (9/10-13 2019)

  3. [oral] M. Naka, S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, H. Seo,
    "Anomalous Hall effect in κ-type molecular conductors",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 11aK23-7, Gifu University, Gifu (9/10-13 2019)

  4. [oral] M. Yatsushiro, S. Hayami,
    "Theoretical study of odd-parity multipole orderings in CeCoSi",
    Japan Physical Society Meeting, 74th Annual Meeting, 15pS301-10, Kyusyu University, Fukuoka (3/14-17 2019)

  5. [oral] T. Matsumoto, S. Hayami,
    "Skyrmion crystal phases in frustrated magnets with anisotropic exchange interactions",
    Japan Physical Society Meeting, 74th Annual Meeting, 15pF304-6, Kyusyu University, Fukuoka (3/14-17 2019)

  6. [oral] M. Naka, S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, H. Seo,
    "Symmetry breaking and transport properties in κ-type molecular conductors",
    Japan Physical Society Meeting, 74th Annual Meeting, 15aB211-4, Kyusyu University, Fukuoka (3/14-17 2019)

  7. [oral] R. Yambe, S. Hayami,
    "Multiple-Q ordering in d-p model with strong Hund’s rule coupling",
    Japan Physical Society Meeting, 74th Annual Meeting, 14pS301-9, Kyusyu University, Fukuoka (3/14-17 2019)

  8. [poster] S. Okumura, S. Hayami, Y. Kato, 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)

  9. [poster] S. Okumura, S. Hayami, Y. Kato, 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)

  10. [poster] T. Matsumoto, 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)

  11. [poster] T. Matsumoto, 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)

  12. [oral] M. Naka, S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, H. Seo
    "Spin current generation in κ-type molecular conductors",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 11pK302-7, Doshisha University, Kyoto (9/9-12 2018)

  13. [oral] M. Naka, S. Hayami, H. Kusunose, Y. Yanagi, Y. Motome, H. Seo
    "Spin splitting in κ-type molecular conductors",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 11pK302-6, Doshisha University, Kyoto (9/9-12 2018)

  14. [poster] M. Yatsushiro, 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)

  15. [poster] T. Matsumoto, 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)

  16. [oral] Y. Yanagi, S. Hayami, Y. Motome, H. Kusunose,
    "Multipole ordering and nonreciprocal response in Cd2Re2O7",
    Japan Physical Society Meeting, 2018 Autumn Meeting, 9aB206-8, Doshisha University, Kyoto (9/9-12 2018)

  17. [oral] ○Y. Yanagi,, S. Hayami, H. Kusunose,
    "Theory of magnetoelectric response in honeycomb antiferromagnet Co4Nb2O9",
    Japan Physical Society Meeting, 2017 Autumn Meeting, 22aF11-12, Iwate University, Iwate (9/21-24 2017)

  18. [oral] ○Y. Yanagi,, S. Hayami, H. Kusunose,
    "Theoretical study on magnetoelectric effect in Co4Nb2O9",
    Japan Physical Society Meeting, 71st Annual Meeting, 20aL22-4, Osaka University, Osaka (3/17-20 2017)

  19. [oral] ○R. Ozawa, S. Hayami, Y. Motome,
    "Temperature-field phase diagram of skyrmion crystals with different topological numbers in the Kondo lattice model",
    Japan Physical Society Meeting, 71st Annual Meeting, 19pC24-9, Osaka University, Osaka (3/17-20 2017)

  20. [poster] ○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)

  21. [oral] ○R. Ozawa, S. Hayami, and Y. Motome,
    "Domain structure of multiple-Q ordered states in itinerant magnets",
    Japan Physical Society Meeting, 2016 Autumn Meeting, 13pAP-7, Kanazawa University, Ishikawa (9/13-16 2016)

  22. [oral] ○R. Ozawa, Kipton Barros, S. Hayami, and Y. Motome,
    "Collinear, coplanar, and noncoplanar magnetic transitions induced by the magnetic anisotropy and external magnetic field in spin-charge coupled systems",
    Japan Physical Society Meeting, 2016 Autumn Meeting, 13pAP-5, Kanazawa University, Ishikawa (9/13-16 2016)

  23. [poster] ○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)

  24. [poster] ○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)

  25. [poster] 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)

  26. [poster] 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)

  27. [poster] ○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)

  28. [oral] S. Hayami, ○R. Ozawa, Y. Motome, C. D. Batista,
    "Stabilizing Mechanism of Meron Crystals: Weak Coupling Approach",
    Japan Physical Society Meeting, 2015 Autumn Meeting, 16aDC-2, Kansai University, Osaka (9/16-19 2015)

  29. [oral] ○R. Ozawa, K. Barros, S. Hayami, G.-W. Chern, M. Udagawa, Y. Motome, C. D. Batista,
    "Numerical Study on Meron Crystals with Spin Scalar Chiral Stripes on a Square Lattice",
    Japan Physical Society Meeting, 2015 Autumn Meeting, 16aDC-1, Kansai University, Osaka (9/16-19 2015)

  30. [oral] ○Y. Sugita, S. Hayami, and Y. Motome,
    [Japanese] "Orbital order and anomalous electronic state in a d-p model with parity mixing",
    Japan Physical Society Meeting, 70st Annual Meeting, 23pBF-12, Waseda University, Tokyo (3/21-24 2015)

  31. [oral] ○Y. Motome, T. Misawa, J. Yoshitake, and S. Hayami,
    [Japanese] "Charge ordering instability in Kondo lattice systems",
    新学術領域研究「重い電子系の形成と秩序化」4th workshop, 12D5, Tokyo Institute of Technology, Tokyo, (1/12-14 2013)

Seminar

  1. [Formal] Satoru Hayami,
    "Classification of multipoles and cross-correlated phenomena under crytsallographic point group",
    ISSP Qunatum material seminar, University of Tokyo, Chiba (12/28 2018)

  2. [Informal] Satoru Hayami,
    "Chiral orderings in frustrated magnets",
    Motome Lab seminar, University of Tokyo, Tokyo (3/24 2016)

  3. [Formal] Satoru Hayami,
    "Noncoplanar ordering in frustrated itinerant magnets",
    BLABS, Los Alamos National Laboratory, Los Alamos, New Mexico, United States (11/2 2015)

  4. [Informal] Satoru Hayami,
    "Spontaneous Inversion Symmetry Breaking in Itinerant Electron Systems",
    Los Alamos National Laboratory, Los Alamos, New Mexico, United States (4/13 2015)

  5. [Formal] S. Hayami,
    "Effects of electron correlation in spin-orbital coupled systems -parity breaking by charge, spin, and orbital ordering and peculiar responses-",
    Colloquium in Condensed Matter Physics, Niigata University, Niigata (11/12 2014)

  6. [Formal] Satoru Hayami,
    "Toroidal order in metals without local inversion symmetry",
    ETH, Zurich, Switzerland (7/14 2014)

  7. [Informal] Satoru Hayami,
    "3D Dirac electrons on a cubic lattice with noncoplanar multiple-Q order",
    Goethe University, Frankfurt, Germany (7/3 2014)

  8. [Formal] Satoru Hayami,
    "3D Dirac electrons on a cubic lattice with noncoplanar multiple-Q order",
    Max-Planck Institute, Stuttgart, Germany (7/1 2014)

  9. [Informal] Satoru Hayami,
    "Toroidal order in metals without local inversion symmetry",
    University of Cologne, Cologne, Germany (6/25 2014)

  10. [Informal] S. Hayami,
    "Noncoplanar multiple-Q magnetic orderings in itinerant electron systems",
    Furusaki Lab seminar, RIKEN, Wako, Saitama (4/25 2014)

  11. [Informal] S. Hayami,
    "Noncoplanar multiple-Q magnetic orderings with three-dimensional Dirac electrons",
    Kohno Lab seminar, Osaka University, Toyonaka, Osaka (7/5 2013)