Kazushi Aoyama

Last Updated :2026/04/20

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

Research Fields

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

Research Keywords

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

Research Activities

Academic Papers

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