Hiroshi Shimahara

Last Updated :2020/10/28

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
E-mail
hirohiroshima-u.ac.jp

Basic Information

Academic Degrees

  • Doctor of Science, University of Tsukuba
  • Master of Science, University of Tsukuba

Research Fields

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

Research Keywords

  • Superconductivity
  • Solid State Physics
  • Theoretical Physics

Educational Activity

Course in Charge

  1. 2020, Undergraduate Education, First Semester, Statistical Mechanics I
  2. 2020, Undergraduate Education, Second Semester, Statistical Mechanics II
  3. 2020, Undergraduate Education, 4Term, Advanced Physics
  4. 2020, Undergraduate Education, First Semester, Special Study for Graduation A
  5. 2020, Undergraduate Education, Second Semester, Special Study for Graduation B
  6. 2020, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
  7. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Sciences of Matter
  8. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Sciences of Matter
  9. 2020, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
  10. 2020, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
  11. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
  12. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
  13. 2020, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
  14. 2020, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
  15. 2020, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
  16. 2020, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
  17. 2020, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
  18. 2020, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  19. 2020, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Award of Education

  1. 2019/11/02, Hiroshima University

Research Activities

Academic Papers

  1. Vestigial Van Hove Singularity and Higher-Temperature Superconducting Phase Induced by Perpendicular Uniaxial Pressures in Quasi-Two-Dimensional Superconductors, Journal of the Physical Society of Japan, 89(09), 093704-1-093704-5, 20200812
  2. Scaling Theory for Critical Phenomena in Coupled Magnetic Systems - Critical Exponents of pi-d Antiferromagnets -, Journal of the Physical Society of Japan, 89(04), 043001-1-043001-5, 20200306
  3. Fulde-Ferrell-Larkin-Ovchinnikov State in Quasi-One-Dimensional Systems: Correlation between Fermi-Surface Distortion and Optimal In-Plane Magnetic-Field Direction, Journal of the Physical Society of Japan, 89(2), 024708-1-024708-8, 2020,1,29
  4. Critical Phenomena in Coupled Magnetic Systems -Application to the Organic Antiferromagnet lambda-(BETS)(2)FeCl4-, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 88(4), 20190415
  5. Stabilization of the Fulde-Ferrell-Larkin-Ovchinnikov State by Tuning In-plane Magnetic-Field Direction: Application to a Quasi-One-Dimensional Organic Superconductor, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87(8), 20180815
  6. Stabilization of the Fulde-Ferrell-Larkin-Ovchinnikov State by Tuning In-plane Magnetic-Field Direction: Application to a Quasi-One-Dimensional Organic Superconductor, Journal of the Physical Society of Japan, 87(8), 083701-1-083701-5, 20180709
  7. Spin Wave Theory in Two-Dimensional Coupled Antiferromagnets, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87(4), 20180415
  8. Spin Wave Theory in Two-Dimensional Coupled Antiferromagnets, Journal of the Physical Society of Japan, 87(4), 043702-1-043702-5, 20180313
  9. Spin Structures and Phase Diagrams of Extended Spatially Completely Anisotropic Triangular Lattice Antiferromagnets, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(12), 20171215
  10. Spin Structures and Phase Diagrams of Extended Spatially Completely Anisotropic Triangular Lattice Antiferromagnets, Journal of the Physical Society of Japan, 86, 124709-1-124709-7, 20171110
  11. On Scaling Relations of Organic Antiferromagnets with Magnetic Anions, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(4), 20170415
  12. On Scaling Relations of Organic Antiferromagnets with Magnetic Anions, Journal of the Physical Society of Japan, 86, 043704-1-043704-5, 20170330
  13. Spin-Triplet Pairing Induced by Spin-Singlet Interactions in Noncentrosymmetric Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(2), 20170215
  14. Mean Field Theory of a Coupled Heisenberg Model and Its Application to an Organic Antiferromagnet with Magnetic Anions, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(2), 20160315
  15. Spin-Flop Transition and a Tilted Canted Spin Structure in a Coupled Antiferromagnet, Journal of the Physical Society of Japan, 85, 043708-1-043708-2, 20160330
  16. Mean Field Theory of a Coupled Heisenberg Model and Its Application to an Organic Antiferromagnet with Magnetic Anions, Journal of the Physical Society of Japan, 85, 024704-1-024704-7, 20160106
  17. Erratum: "Odd- and Even-Frequency Superconductivities Mediated by Ferromagnetic Magnon" [J. Phys. Soc. Jpn. 83, 123704 (2014)], Journal of the Physical Society of Japan, 84(5), 201506
  18. Stabilization of Long-Range Order by Additional Anisotropic Spins in Two-Dimensional Isotropic Heisenberg Antiferromagnets —A Possible Model of an Organic Compound with Magnetic Anions—, Journal of the Physical Society of Japan, 83(11), 20141014
  19. Odd- and Even-Frequency Superconductivities Mediated by Ferromagnetic Magnons, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(12), 20141215
  20. ★, Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors, Journal of the Physical Society of Japan, 76(5), 051005 (16 PAGES), 20070501
  21. ★, Green’s Function Theory of the Two-Dimensional Heisenberg Model - Spin Wave in Short Range Order -, J. Phys. Soc. Jpn., 60(7), 2394-2405, 19940701
  22. ★, Fulde-Ferrell state in a quasi-two-dimensional superconductors, Phys. Rev. B, 50, 12760-12765, 19940401
  23. ★, Crossover from vortex states to the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional s- and d-wave superconductors, J. Phys. Soc. Jpn., 66(11), 3591-3599, 19971101
  24. ★, Structure of the Fulde-Ferrell-Larkin-Ovchinnikov State in Two-Dimensional Superconductors, J. Phys. Soc. Jpn., 67(3), 736-739, 19980301
  25. ★, Phase Fluctuations and Kosterlitz-Thouless Transition in Two-Dimensional Fulde-Ferrell-Larkin-Ovchinnikov Superconductors, J. Phys. Soc. Jpn., 67(6), 1872-1875, 19980601
  26. ★, Long-Range Spin-Fluctuations and Superconductivity in Quasi-One-Dimensional Organic Compounds, J. Phys. Soc. Jpn., 58(5), 1735-1747, 19890501
  27. ★, Superconductivity and Spin Density Wave in Two Dimensional Hubbard Model, J. Phys. Soc. Jpn., 57(3), 1044-1055, 19880301
  28. ★, Fulde-Ferrell-Larkin-Ovchinnikov State in a Quasi-Two-Dimensional Organic Superconductor, J. Phys. Soc. Jpn., 66(3), 541-544, 19970301
  29. ★, Fulde-Ferrell-Larkin-Ovchinnikov state and field-induced superconductivity in an organic superconductor, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71(7), 1644-1647, 200207
  30. Stability of Fulde-Ferrell-Larkin-Ovchinnikov state in type-II superconductors against the phase fluctuations, Physica B, 259-261, 492-493, 19990401
  31. Fulde-Ferrell-Larkin-Ovchinnikov state and field-induced superconductivity in an organic superconductor, J. Phys. Soc. Jpn., 71(7), 1644-1647, 20020401
  32. Phase Transition without Spontaneous Symmetry Breaking between Hard and Soft Solid States, Journal of the Physical Society of Japan, 74(3), 823-826, 20070301
  33. Dimensional Crossover of the Fulde-Ferrell-Larkin-Ovchinnikov State in Strongly Pauli-Limited Quasi-One-Dimensional Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(2), 201402
  34. Temperature Dependence of the Spin Susceptibility in Noncentrosymmetric Superconductors with Line Nodes, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(4), 201404
  35. Stabilization of Long-Range Order by Additional Anisotropic Spins in Two-Dimensional Isotropic Heisenberg Antiferromagnets - A Possible Model of an Organic Compound with Magnetic Anions, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(11), 20141115
  36. Phase Diagrams of Noncentrosymmetric Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82(2), 201302
  37. FFLO state and exotic superconductors, 96巻(5号), 501-524, 20110801
  38. Transition from the vortex state to the Fulde-Ferrell-Larkin-Ovchinnikov state in quasi-two-dimensional superconductors, PHYSICAL REVIEW B, 80(21), 200912
  39. Types of Fulde-Ferrell-Larkin-Ovchinnikov states induced by anisotropy effects, PHYSICAL REVIEW B, 79(6), 200902
  40. ★, Fulde-Ferrell-Larkin-Ovchinnikov state in heavy fermion superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(5), 200705
  41. Erratum: Antiferromagnetic superconductors with effective-mass anisotropy in magnetic fields, Physical Revew B, 75, 099902 (1PAGE), 20070328
  42. Antiferromagnetic superconductors with effective mass anisotropy in magnetic fields, Physical Review B, 74, 024518 (10PAGES), 20060724
  43. Antiferromagnetic superconductors with effective-mass anisotropy in magnetic fields, PHYSICAL REVIEW B, 74(2), 200607
  44. Interlayer spin-singlet pairing induced by magnetic interactions in an antiferromagnetic superconductor, Physical Review B, 72, 134518 (7PAGES), 20051021
  45. Phase transition without spontaneous symmetry breaking between hard and soft solid states, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(3), 823-826, 200503
  46. Interlayer spin-singlet pairing induced by magnetic interactions in an antiferromagnetic superconductor, PHYSICAL REVIEW B, 72(13), 200510
  47. Reduction of the Pauli paramagnetic pair-breaking effect in antiferromagnetic superconductors, Journal of the Physical Society of Japan, 2635-2638, 20041001
  48. Spin-Triplet Superconductivity Mediated by Phonons in Quasi-One-Dimensional Systems, Journal of the Physical Society of Japan, 3121-3128, 20041101
  49. Reduction of Pauli paramagnetic pair-breaking effect in antiferromagnetic superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(10), 2635-2638, 200410
  50. Spin-triplet superconductivity mediated by phonons in quasi-one-dimensional systems, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(11), 3121-3128, 200411
  51. Upper critical field and field-induced superconductivity in layered superconductors with antiferromagnetic subsystems, Physica B, 329-333, 1442-1443, 20030401
  52. Internal Transition of Superconducting State by Impurity Doping with a Jump of Isotope Effect Coefficient in Multi-Band Superconductors, J. Phys. Soc. Jpn., 1843-1846, 20030801
  53. Isotope Effect of Superconductors with Coexisting Interactions of Phonon and Nonphonon mechanisms, J. Phys. Soc. Jpn., 1851-1854, 20030801
  54. Upper critical field and field-induced superconductivity in layered superconductors with antiferromagnetic subsystems, PHYSICA B-CONDENSED MATTER, 329, 1442-1443, 200305
  55. Internal transition of superconducting state by impurity doping with a jump of isotope-effect coefficient in multiband superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72(8), 1843-1846, 200308
  56. Isotope effect in superconductors with coexisting interactions of phonon and nonphonon mechanisms, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72(8), 1851-1854, 200308
  57. Triplet superconductivity induced by screened phonon interactions in ferromagnetic compounds, Europhys. Lett., 57, 247-253, 20020401
  58. Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect, Phys. Rev. B, 65, 174502, 20020401
  59. Enhancement of the upper critical field and a field induced superconductivity in antiferromagnetic conductors, J. Phys. Soc. Jpn., 71(3), 713-716, 20020301
  60. Temperature dependence of the upper critical field of an anisotropic singlet superconductivity in a square lattice tight-binding model in parallel magnetic fields, J. Phys. Soc. Jpn., 71(5), 1234-1237, 20020501
  61. Triplet superconductivity induced by screened phonon interactions in ferromagnetic compounds, EUROPHYSICS LETTERS, 57(2), 247-253, 200201
  62. Enhancement of the upper critical field and a field-induced superconductivity in antiferromagnetic conductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71(3), 713-716, 200203
  63. Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effects, PHYSICAL REVIEW B, 65(17), 20020501
  64. Temperature dependence of the upper critical field of anisotropic singlet superconductivity in a square lattice tight-binding model in parallel magnetic fields, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71(5), 1234-1237, 200205
  65. Interplay of Fulde-Ferrell-Larkin-Ovchinnikov and Vortex states in two-dimensional Superconductors, J. Low Temp. Phys., 118(1-2), 91-104, 20000101
  66. Pseudogap due to antiferromagnetic fluctuations and the phase diagram of the high temperature oxide superconductors, J. Phys. Soc. Jpn., 69(6), 1598-1601, 20000601
  67. Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order, Phys. Rev. B, 61(22), R14936-R14939, 20000401
  68. Superconductivity in a Ferromagnetic Layered Compound, Phys. Rev. B, 62(21), 14541-15546, 20000401
  69. Coexistence of Singlet and Triplet Attractive Channels in the Pairing Interactions Mediated by Antiferromagnetic Fluctuations, J. Phys. Soc. Jpn., 69(7), 1966-1969, 20000401
  70. Upper critical fields of quasi-low-dimensional superconductors with coexisting singlet and triplet pairing interactions in parallel magnetic fields, Phys. Rev. B, 62(5), 3524-3527, 20000401
  71. Interplay of Fulde-Ferrell-Larkin-Ovchinnikov and vortex states in two-dimensional superconductors, JOURNAL OF LOW TEMPERATURE PHYSICS, 118(1-2), 91-104, 200001
  72. Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order, PHYSICAL REVIEW B, 61(22), 14936-14939, 20000601
  73. Pseudogap due to antiferromagnetic fluctuations and the phase diagram of high-temperature oxide superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 69(6), 1598-1601, 200006
  74. Coexistence of singlet and triplet attractive channels in the pairing interactions mediated by antiferromagnetic fluctuations, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 69(7), 1966-1969, 200007
  75. Upper critical fields of quasi-low-dimensional superconductors with coexisting singlet and triplet pairing interactions in parallel magnetic fields, PHYSICAL REVIEW B, 62(5), 3524-3527, 20000801
  76. Superconductivity in a ferromagnetic layered compound, PHYSICAL REVIEW B, 62(21), 14541-14546, 20001201
  77. Exactly Aligned Magnetic Field and the Fulde-Ferrell-Larkin-Ovchinnikov State in Quasi-Low-Dimensional Superconductors, Journal of Superconductivity, 12(3), 469-473, 19990301
  78. Enhancement of the Upper Critical Field Due to a Fermi-Surface Effect in Quasi-Two-Dimensional Superconductors in Parallel Magnetic Fields, J. Phys. Soc. Jpn., 68(9), 3069-3075, 19990901
  79. Magnetic phase diagram of a generalized Kondo lattice model with classical localized spins, J. Phys. Soc. Jpn., 65(2), 552-559, 19960201
  80. Nonuniform superconductivity due to the orbital magnetic effect in a d-wave superconductor in a magnetic field, Phys. Rev. B, 53(18), 12284-12298, 19960401
  81. A possibility of a new type of the Fulde-Ferrell-Larkin-Ovchinnikov state, Czech. J. Phys., 46, 561-564, 19960401
  82. A Nonuniform State in a d-Wave Superconductor under Magnetic Field, J. Phys. Soc. Jpn., 64, 371-374, 19950401
  83. Spiral spin states in a generalized Kondo lattice model with classical spins, Phys. Rev. B, 51, 3027-3030, 19950401
  84. Nonplanar spiral states of the t-J model with classical spins, Phys. Rev. B, 51(17), 11597-11602, 19950401
  85. The doping dependence of magnetic ordering in the t-J model with classical spins, Physica B, 206-207(1-4), 688-690, 19950401
  86. Effect of the Landau parameter F_2^a on the magnetic phase diagram of superfluid 3He, Physica B, 194, 801-804, 19940401
  87. Fermion-Magnon Bound State in a Spin-Fermion Model, J. Phys. Soc. Jpn., 63, 1059-1070, 19940401
  88. Magnon Exchange Mechanism of Superconductivity in a Generalized Kondo Lattice Model, J. Phys. Soc. Jpn., 63, 1861-1870, 19940401
  89. Order Parameter Mixing Effect in the Fulde-Ferrell State, J. Phys. Soc. Jpn., 63, 2499-250, 19940401
  90. Fragility of the Antiferromagnetic Long-Range-Order and Spin Correlation in the Two-dimensional t-J Model, J. Phys. Soc. Jpn., 61(3), 989-997, 19920301
  91. Antiferromagnetic Long-Range-Order and Spin Waves in the Spin-Fermion Model on the CuO_2 Lattice, J. Phys. Soc. Jpn., 61(10), 3708-3720, 19921001
  92. Antiferromagnetic Transition Temperature and Spin Correlations in Quasi-Two-Dimensional Spin-Fermion Model, J. Phys. Soc. Jpn., 62(4), 1324-1335, 19920401
  93. Theory of Spin waves in Short Range Order on the basis of the Two Dimensional t-J Model, Physica C, 185-189, 1517-1518, 19910801
  94. Magnetic Properties of the Strong Coupling Hubbard Model, J. Phys. Soc. Jpn., 58(3), 801-804, 19890301
  95. Magnetic Properties and Superconductivity of the Strong Coupling Hubbard Model, J. Phys. Soc. Jpn., 58(11), 4168-4183, 19891101
  96. Local Interactions and Van Hove Singularities in High-T_c Superconductor, Jpn. J. Appl. Phys., 26(10), L1674-L1677, 19871001

Invited Lecture, Oral Presentation, Poster Presentation

  1. Fulde-Ferrell-Larkin-Ovchinnikov state in quasi-low-dimensional superconductors, Hiroshi Shimahara, March Meeting 2005 of American Physical Society, 2005/03, With Invitation, English, Americal Physical Society, Los Angels
  2. Phase transitions of anisotropic coupled magnetic systems in magnetic field, Hiroshi Shimahara, Kazuhiro Ito, 71th Annual Meeting, Japanese Physical Society of Japan, 2016/03/19, Without Invitation, Japanese
  3. Order parameter mixing effect on the FFLO state of quasi-one-dimensional supercondoctors, 2016/03/21, Without Invitation, Japanese
  4. Theory of critical phenomena in coupled magnets, Hiroshi Shimahara, 2019/03/14, Without Invitation, Japanese
  5. Perturbation theory in extended Kondo lattice model and the application to quasi-two-dimensional organic conductors, Yuki Kohno and Hiroshi Shimahara, 2019/03/14, Without Invitation, Japanese
  6. In-plane magnetic field angle dependence and phase diagram of the FFLO state in quasi-organic superconductors, Katsumi Itahashi and Hiroshi Shimahara, 2019/03/14, Without Invitation, Japanese
  7. Theory of critical phenomena in coupled antiferromagnets, Hiroshi Shimahara, 2018/09/09, Without Invitation, Japanese
  8. Perturbation theory in extended Kondo lattice model and its application to the organic antiferromagnets, Yuki Kohno and Hiroshi Shimahara, 2018/09/09, Without Invitation, Japanese
  9. Statility of the FFLO state in quasi-one-dimensional superconductors in in-plane magnetic field, Katsumi Itahashi and Hiroshi Shimahara, 2018/09/09, Without Invitation, Japanese