KAZUSHI AOYAMA

Last Updated :2026/07/02

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
Web Site
https://home.hiroshima-u.ac.jp/aoyamakzc
E-mail
aoyamakzchiroshima-u.ac.jp
Other Contact Details
Higashihiroshima, Hiroshima 739-8530, Japan
TEL : (+81)82-424-4132 FAX : (+81)
Self-introduction
I am interested in emergent cooperative phenomena in matter such as magnetism, superconductivity, and charge density wave. I study their microscopic mechanisms in theoretical approaches including analytical calculations and computer simulations.

Basic Information

Major Professional Backgrounds

  • 2014/10, 2026/03, Osaka University, Department of Earth and Space Science, Graduate School of Science, Assistant Professor
  • 2012/03, 2012/12, Louisiana State University, Visiting Researcher
  • 2011/04, 2011/12, ETH Zurich, Visiting Researcher
  • 2010/04, 2014/09, Kyoto University, The Hakubi Center for Advanced Research, Program Specific Assistant Professor(Hakubi)
  • 2008/04, 2010/03, Japan Society for the Promotion of Science, Research Fellowship for Young Scientists

Educational Backgrounds

  • Kyoto University, Graduate School of Science, Department of Physics, Japan, 2006/04, 2009/03
  • Kyoto University, Graduate School of Science, Department of Physics, Japan, 2004/04, 2006/03
  • Kyoto University, Graduate School of Science, 2000/04, 2004/03

Academic Degrees

  • Kyoto University
  • Kyoto University

Research Fields

  • Mathematical and physical sciences;Physics;Condensed matter physics II

Research Keywords

  • magnetism, frustration, superconductivity, charge density wave, transport phenomena

Educational Activity

Course in Charge

  1. 2026, Liberal Arts Education Program1, 4Term, Introduction to Physics
  2. 2026, Undergraduate Education, 1Term, Introduction to Physical Sciences
  3. 2026, Undergraduate Education, 2Term, Seminar in Quantum Mechanics II

Research Activities

Academic Papers

  1. Geometric Phase and Asymmetric Spin-Wave Dispersion in a Triple-Q Chiral State of a Breathing-Kagome Antiferromagnet, Journal of Low Temperature Physics, 222, 82, 20260518
  2. Triple-Q collinear state with compensated ferrimagnetic nature on frustrated kagome lattice, npj Spintronics, 20260513
  3. Observation of the crossover from quantum fluxoid to half-quantum fluxoid in a chiral superconducting device, Science Advances, 11(36), eadw6625, 20250905
  4. Effects of the three-dimensional interplanar coupling on the centrosymmetric skyrmion crystal formation in the frustrated stacked-triangular Heisenberg model, Physical Review B, 111(22), 224410, 20250605
  5. Spontaneous chirality selection and nonreciprocal spin wave in breathing-kagome antiferromagnets at zero field, Physical Review B, 111(14), 144413, 20250414
  6. RKKY interaction in the presence of a charge density wave order, Physical Review B, 111(10), L100404, 20250325
  7. Effects of frequency mixing on Shapiro-step formations in sliding charge-density-waves, Applied Physics Letters, 125(17), 173102, 20241021
  8. Stripe order and diode effect in two-dimensional Rashba superconductors, Physical Review B, 109(2), 20240130
  9. Shapiro Steps and Surface Acoustic Waves in Charge Density Wave Dynamics, New Physics: Sae Mulli, 73(12), 1086-1089, 20231231
  10. Fractal and subharmonic responses driven by surface acoustic waves during charge density wave sliding, Physical Review B, 108(10), L100508, 20230919
  11. Half-quantum flux in spin-triplet superconducting rings with bias current, Physical Review B, 108(6), L060502, 20230807
  12. Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet, Proceedings of the National Academy of Sciences, 120(33), 20230807
  13. Theoretical Study of CDW Sliding in the Presence of Surface Acoustic Waves, JPS Conference Proceedings, 38(011059), 20230522
  14. Zero-Field Miniature Skyrmion Crystal and Chiral Domain State in Breathing-Kagome Antiferromagnets, Journal of the Physical Society of Japan, 92(3), 033701, 20230208
  15. Spin and thermal transport and critical phenomena in three-dimensional antiferromagnets, Physical Review B, 106(22), 224407, 20221207
  16. Hedgehog lattice and field-induced chirality in breathing-pyrochlore Heisenberg antiferromagnets, Physical Review B, 106(6), 20220809
  17. Little-Parks oscillation and d-vector texture in spin-triplet superconducting rings with bias current, Physical Review B, 106(L060502), 20220802
  18. Observation of topological Z2 vortex fluctuations in the frustrated Heisenberg magnet NaCrO2, Physical Review B, 106(5), 20220802
  19. Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice, Physical Review B, 105(L100407), 20220325
  20. Spin Dynamics Simulation of the Z2-vortex Fluctuations, Journal of the Physical Society of Japan, 91(3), 20220315
  21. Effects of spin-lattice coupling and a magnetic field in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice, Physical Review B, 104(18), 20211108
  22. Hedgehog-lattice spin texture in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice, Physical Review B, 103(1), 014406, 20210106
  23. Negative resistance state in superconducting NbSe2 induced by surface acoustic waves, Science Advances, 6(34), eaba1377-eaba1377, 202008
  24. Spin Current as a Probe of the Z2 -Vortex Topological Transition in the Classical Heisenberg Antiferromagnet on the Triangular Lattice, Physical Review Letters, 124(4), 047202, 20200129
  25. Effects of magnetic anisotropy on spin and thermal transport in classical antiferromagnets on the square lattice, Physical Review B, 100(14), 144416, 20191009
  26. Spin ordering induced by lattice distortions in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice, Physical Review B, 99(14), 144406, 201904
  27. Surface scattering effect and the stripe order in films of the superfluid 3He B phase, Journal of the Physical Society of Japan, 85(9), 094604, 20160915
  28. Spin-Lattice-Coupled Order in Heisenberg Antiferromagnets on the Pyrochlore Lattice, Physical Review Letters, 116(25), 257201, 20160621
  29. Field-induced superconducting phase of FeSe in the BCS-BEC cross-over, Proceedings of the National Academy of Sciences of the United States of America, 111(46), 16309-16313, 20141118
  30. Signatures of the helical phase in the critical fields at twin boundaries of noncentrosymmetric superconductors, Physical Review B, 89(17), 174518, 20140530
  31. Stripe order in superfluid 3 He confined in narrow cylinders, Physical Review B, 89(14), 140502(R), 201404
  32. Orbital Order and Hund's Rule Frustration in Kondo Lattices, PHYSICAL REVIEW LETTERS, 111(15), 157202, 201310
  33. Field-induced reentrant superconductivity in thin films of nodal superconductors, Physical Review B, 88(6), 064519, 20130830
  34. Inhomogeneous Superconducting States of Mesoscopic Thin-Walled Cylinders in External Magnetic Fields, Physical Review Letters, 110(17), 177004, 201304
  35. Model for Magnetic Flux Patterns Induced by the Influence of In-Plane Magnetic Fields on Spatially Inhomogeneous Superconducting Interfaces of LaAlO3-SrTiO3 Bilayers, Physical Review Letters, 109(23), 237007, 201212
  36. Antiferromagnetic order in vortex states in paramagnetic and d-wave superconductors, Journal of Physics: Conference Series, 391(1), 201209
  37. Fluctuations and order of antiferromagnetism induced by paramagnetic pair breaking in superconducting vortex lattices, Physical Review B, 84(18), 184516, 201111
  38. Flux distribution in vortex lattice states in d-wave and paramagnetic superconductors, Journal of Physics: Conference Series, 273(1), 201102
  39. Roles of antiferromagnetic fluctuation in high field phase diagram of superconductors with strong paramagnetic depairing, Physica C-Superconductivity and its applications, 470(SUPPL.1), S584-S585, 201012
  40. Vortex core transitions in superfluid He-3 in globally anisotropic aerogels, Physical Review B, 82(14), 144514, 201010
  41. Antiferromagnetic ordering induced by paramagnetic depairing in unconventional superconductors, Physical Review B, 82(6), 060510(R), 201008
  42. Vortex Core Transitions in Superfluid He-3 in Uniaxially Anisotropic Aerogel, Journal of Low Temperature Physics, 158(3-4), 404-409, 201002
  43. Effects of magnetic impurity scattering on superfluid 3He in aerogel, Journal of Physics: Conference Series, 150(3), 200903
  44. Structure of vortices in superfluid 3He A-like phase in uniaxially stretched aerogel, Journal of Physics: Conference Series, 150(3), 200903
  45. Superfluid He-3 in globally isotropic random media, Physical Review B, 79(6), 064527, 200902
  46. Strong-coupling effects in superfluid He-3 in aerogel, Physical Review B, 76(10), 104512, 200709
  47. Perturbative study of strong coupling correction in superfluid He-3 in aerogel, Journal of Low Temperature Physics, 148(5-6), 573-577, 200709
  48. Pairing states of superfluid He-3 in uniaxially anisotropic aerogel, Physical Review B, 73(6), 060504, 200602
  49. Superfluid transition to ABM state of He-3 in aerogel, Journal of Physics and Chemistry of Solids, 66(8-9), 1330-1333, 200508
  50. Equal-spin pairing state of superfluid He-3 in aerogel, Physical Review B, 72(1), 012515, 200507

External Funds

Acceptance Results of Competitive Funds

  1. Grants-in-Aid for Scientific Research, Novel dynamics and transport phenomena of Z2 vortex, 2024/04/01, 2028/03/31
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  2. 2023/04/01, 2027/03/31
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  3. Grants-in-Aid for Scientific Research, Theoretical study of spin and thermal transport near a phase transition in magnetic materials, 2021/04/01, 2025/03/31
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  4. Grants-in-Aid for Scientific Research, Frustration-induced spin textures, 2017/05/31, 2022/03/31
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  5. Grants-in-Aid for Scientific Research, Theoretical study of lattice-distortion effects on the spin ordering in frustrated magnets, 2016/04/01, 2019/03/31
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  6. Grants-in-Aid for Scientific Research, Study of spin-orbit coupling effects on superconducting and superfluid properties in spatially inhomogeneous enviroments, 2013/04/01, 2016/03/31
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  7. 2008, 2009
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