Hiroshi Shimahara
Last Updated :2025/01/07
- 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
- 2024, Undergraduate Education, First Semester, Statistical Mechanics I
- 2024, Undergraduate Education, Second Semester, Statistical Mechanics II
- 2024, Undergraduate Education, 4Term, Advanced Physics
- 2024, Undergraduate Education, First Semester, Special Study for Graduation A
- 2024, Undergraduate Education, Second Semester, Special Study for Graduation B
- 2024, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
- 2024, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
- 2024, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
- 2024, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
- 2024, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
- 2024, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
- 2024, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
- 2024, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
- 2024, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
- 2024, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter
Award of Education
- 2019/11/02, Hiroshima University
Research Activities
Academic Papers
- Mixing of Singlet and Triplet Order Parameters of the Fulde-Ferrell-Larkin-Ovchinnikov State in Quasi-One-Dimensional Superconductors, Journal of the Physical Society of Japan, JPS Cof. Proc., 38, 011057, 20230523
- A Method to Examine Likelihood of Candidate Theories beyond Parameter Optimization-Application to Specific Heat Data for the Multiband Superconductor Sr2RuO4, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 92(7), 20230715
- Types of Fulde-Ferrell-Larkin-Ovchinnikov states induced by anisotropy effects, PHYSICAL REVIEW B, 79(6), 200902
- Transition from the vortex state to the Fulde-Ferrell-Larkin-Ovchinnikov state in quasi-two-dimensional superconductors, PHYSICAL REVIEW B, 80(21), 200912
- Local Interactions and Van Hove Singularities in High-T_c Superconductor, Jpn. J. Appl. Phys., 26(10), L1674-L1677, 19871001
- ★, Superconductivity and Spin Density Wave in Two Dimensional Hubbard Model, J. Phys. Soc. Jpn., 57(3), 1044-1055, 19880301
- ★, Long-Range Spin-Fluctuations and Superconductivity in Quasi-One-Dimensional Organic Compounds, J. Phys. Soc. Jpn., 58(5), 1735-1747, 19890501
- Magnetic Properties of the Strong Coupling Hubbard Model, J. Phys. Soc. Jpn., 58(3), 801-804, 19890301
- Magnetic Properties and Superconductivity of the Strong Coupling Hubbard Model, J. Phys. Soc. Jpn., 58(11), 4168-4183, 19891101
- ★, 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
- 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
- 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
- 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
- Antiferromagnetic Transition Temperature and Spin Correlations in Quasi-Two-Dimensional Spin-Fermion Model, J. Phys. Soc. Jpn., 62(4), 1324-1335, 19920401
- Effect of the Landau parameter F_2^a on the magnetic phase diagram of superfluid 3He, Physica B, 194, 801-804, 19940401
- Fermion-Magnon Bound State in a Spin-Fermion Model, J. Phys. Soc. Jpn., 63, 1059-1070, 19940401
- Magnon Exchange Mechanism of Superconductivity in a Generalized Kondo Lattice Model, J. Phys. Soc. Jpn., 63, 1861-1870, 19940401
- Order Parameter Mixing Effect in the Fulde-Ferrell State, J. Phys. Soc. Jpn., 63, 2499-250, 19940401
- ★, Fulde-Ferrell state in a quasi-two-dimensional superconductors, Phys. Rev. B, 50, 12760-12765, 19940401
- A Nonuniform State in a d-Wave Superconductor under Magnetic Field, J. Phys. Soc. Jpn., 64, 371-374, 19950401
- Spiral spin states in a generalized Kondo lattice model with classical spins, Phys. Rev. B, 51, 3027-3030, 19950401
- Nonplanar spiral states of the t-J model with classical spins, Phys. Rev. B, 51(17), 11597-11602, 19950401
- The doping dependence of magnetic ordering in the t-J model with classical spins, Physica B, 206-207(1-4), 688-690, 19950401
- Magnetic phase diagram of a generalized Kondo lattice model with classical localized spins, J. Phys. Soc. Jpn., 65(2), 552-559, 19960201
- 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
- A possibility of a new type of the Fulde-Ferrell-Larkin-Ovchinnikov state, Czech. J. Phys., 46, 561-564, 19960401
- ★, Fulde-Ferrell-Larkin-Ovchinnikov State in a Quasi-Two-Dimensional Organic Superconductor, J. Phys. Soc. Jpn., 66(3), 541-544, 19970301
- ★, 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
- ★, Structure of the Fulde-Ferrell-Larkin-Ovchinnikov State in Two-Dimensional Superconductors, J. Phys. Soc. Jpn., 67(3), 736-739, 19980301
- ★, Phase Fluctuations and Kosterlitz-Thouless Transition in Two-Dimensional Fulde-Ferrell-Larkin-Ovchinnikov Superconductors, J. Phys. Soc. Jpn., 67(6), 1872-1875, 19980601
- Stability of Fulde-Ferrell-Larkin-Ovchinnikov state in type-II superconductors against the phase fluctuations, Physica B, 259-261, 492-493, 19990401
- Exactly Aligned Magnetic Field and the Fulde-Ferrell-Larkin-Ovchinnikov State in Quasi-Low-Dimensional Superconductors, Journal of Superconductivity, 12(3), 469-473, 19990301
- 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
- Interplay of Fulde-Ferrell-Larkin-Ovchinnikov and Vortex states in two-dimensional Superconductors, J. Low Temp. Phys., 118(1-2), 91-104, 20000101
- Pseudogap due to antiferromagnetic fluctuations and the phase diagram of the high temperature oxide superconductors, J. Phys. Soc. Jpn., 69(6), 1598-1601, 20000601
- Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order, Phys. Rev. B, 61(22), R14936-R14939, 20000401
- Superconductivity in a Ferromagnetic Layered Compound, Phys. Rev. B, 62(21), 14541-15546, 20000401
- Coexistence of Singlet and Triplet Attractive Channels in the Pairing Interactions Mediated by Antiferromagnetic Fluctuations, J. Phys. Soc. Jpn., 69(7), 1966-1969, 20000401
- 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
- Triplet superconductivity induced by screened phonon interactions in ferromagnetic compounds, Europhys. Lett., 57, 247-253, 20020401
- Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect, Phys. Rev. B, 65, 174502, 20020401
- Enhancement of the upper critical field and a field induced superconductivity in antiferromagnetic conductors, J. Phys. Soc. Jpn., 71(3), 713-716, 20020301
- 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
- Fulde-Ferrell-Larkin-Ovchinnikov state and field-induced superconductivity in an organic superconductor, J. Phys. Soc. Jpn., 71(7), 1644-1647, 20020401
- Upper critical field and field-induced superconductivity in layered superconductors with antiferromagnetic subsystems, Physica B, 329-333, 1442-1443, 20030401
- 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
- Isotope Effect of Superconductors with Coexisting Interactions of Phonon and Nonphonon mechanisms, J. Phys. Soc. Jpn., 1851-1854, 20030801
- Reduction of the Pauli paramagnetic pair-breaking effect in antiferromagnetic superconductors, Journal of the Physical Society of Japan, 2635-2638, 20041001
- Spin-Triplet Superconductivity Mediated by Phonons in Quasi-One-Dimensional Systems, Journal of the Physical Society of Japan, 3121-3128, 20041101
- Interlayer spin-singlet pairing induced by magnetic interactions in an antiferromagnetic superconductor, Physical Review B, 72, 134518 (7PAGES), 20051021
- Phase Transition without Spontaneous Symmetry Breaking between Hard and Soft Solid States, Journal of the Physical Society of Japan, 74(3), 823-826, 20070301
- Antiferromagnetic superconductors with effective mass anisotropy in magnetic fields, Physical Review B, 74, 024518 (10PAGES), 20060724
- Erratum: Antiferromagnetic superconductors with effective-mass anisotropy in magnetic fields, Physical Revew B, 75, 099902 (1PAGE), 20070328
- ★, Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors, Journal of the Physical Society of Japan, 76(5), 051005 (16 PAGES), 20070501
- FFLO state and exotic superconductors, 96巻(5号), 501-524, 20110801
- Interplay of Fulde-Ferrell-Larkin-Ovchinnikov and vortex states in two-dimensional superconductors, JOURNAL OF LOW TEMPERATURE PHYSICS, 118(1-2), 91-104, 200001
- Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order, PHYSICAL REVIEW B, 61(22), 14936-14939, 20000601
- 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
- 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
- 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
- Superconductivity in a ferromagnetic layered compound, PHYSICAL REVIEW B, 62(21), 14541-14546, 20001201
- ★, 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
- Triplet superconductivity induced by screened phonon interactions in ferromagnetic compounds, EUROPHYSICS LETTERS, 57(2), 247-253, 200201
- 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
- Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effects, PHYSICAL REVIEW B, 65(17), 20020501
- 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
- Upper critical field and field-induced superconductivity in layered superconductors with antiferromagnetic subsystems, PHYSICA B-CONDENSED MATTER, 329, 1442-1443, 200305
- 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
- Isotope effect in superconductors with coexisting interactions of phonon and nonphonon mechanisms, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 72(8), 1851-1854, 200308
- Reduction of Pauli paramagnetic pair-breaking effect in antiferromagnetic superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(10), 2635-2638, 200410
- Spin-triplet superconductivity mediated by phonons in quasi-one-dimensional systems, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73(11), 3121-3128, 200411
- Phase transition without spontaneous symmetry breaking between hard and soft solid states, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74(3), 823-826, 200503
- Interlayer spin-singlet pairing induced by magnetic interactions in an antiferromagnetic superconductor, PHYSICAL REVIEW B, 72(13), 200510
- Antiferromagnetic superconductors with effective-mass anisotropy in magnetic fields, PHYSICAL REVIEW B, 74(2), 200607
- ★, Fulde-Ferrell-Larkin-Ovchinnikov state in heavy fermion superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(5), 200705
- Phase Diagrams of Noncentrosymmetric Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82(2), 201302
- 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
- Temperature Dependence of the Spin Susceptibility in Noncentrosymmetric Superconductors with Line Nodes, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(4), 201404
- 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
- Odd- and Even-Frequency Superconductivities Mediated by Ferromagnetic Magnons, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(12), 20141215
- 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
- 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
- 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
- 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
- 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
- Spin-Triplet Pairing Induced by Spin-Singlet Interactions in Noncentrosymmetric Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(2), 20170215
- On Scaling Relations of Organic Antiferromagnets with Magnetic Anions, Journal of the Physical Society of Japan, 86, 043704-1-043704-5, 20170330
- On Scaling Relations of Organic Antiferromagnets with Magnetic Anions, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(4), 20170415
- 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
- Spin Structures and Phase Diagrams of Extended Spatially Completely Anisotropic Triangular Lattice Antiferromagnets, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86(12), 20171215
- Spin Wave Theory in Two-Dimensional Coupled Antiferromagnets, Journal of the Physical Society of Japan, 87(4), 043702-1-043702-5, 20180313
- Spin Wave Theory in Two-Dimensional Coupled Antiferromagnets, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87(4), 20180415
- 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
- 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
- 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
- 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, 20200129
- 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
- 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
- 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(9), 20200915
- Fulde-Ferrell-Larkin-Onhinnikov State in Perpendicular Magnetic Fields in Strongly Pauli-Limited Quasi-Two-Dimensional Superconductors, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 90(4), 20210415
- Stability of Mixed-Symmetry Superconducting States with Broken Time-Reversal Symmetry against Lattice Distortions, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 90(6), 20210615
- Magnetic Structures of Electron Systems on the Extended Spatially Completely Anisotropic Triangular Lattice near Quantum Critical Points, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 90(12), 20211215
Invited Lecture, Oral Presentation, Poster Presentation
- Local pairing and transitions to localized spin antiferromagnetic state in itinerant electron systems, Hiroshi Shimahara, 2024/03/20, Without Invitation, Japanese
- A Method to Examine Likelihood of Candidate Theories beyond Parameter Optimization and its Extension to Multiple Types of Experimental Data, Hiroshi Shimahara, 2023/09/16, Without Invitation, Japanese, Japanese Society of Physics
- Magnetic torque in coupled antiferromagnets in a spin-flop-cross-over regime, Hiroshi Shimahara, 2023/03/24, Without Invitation, Japanese, Japanese Physical Society
- Magnetic torque and spin-flop transition in complex antiferromagnets, Hiroshi Shimahara, 2022/09/13, Without Invitation, Japanese, Japanese Physical Society
- Correlation between Fermi-surface Distortion and Optimal In-Plane Magnetic Field Direction in The Fulde-Ferrell-Larkin-Ovchinnikov State in Quasi-One-Dimensional Superconductors, 2021/03, Without Invitation, Japanese
- Theory of critical phenomena in coupled magnets, Hiroshi Shimahara, 2019/03/14, Without Invitation, Japanese
- 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
- 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
- Theory of critical phenomena in coupled antiferromagnets, Hiroshi Shimahara, 2018/09/09, Without Invitation, Japanese
- 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
- 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
- Order parameter mixing effect on the FFLO state of quasi-one-dimensional supercondoctors, 2016/03/21, Without Invitation, Japanese
- 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
- 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
- Stability of mixed-symmetry superconducting states with broken time-reversal symmetry against lattice distortions, 2021/09/23, Without Invitation, Japanese