1996 Fiscal Year Annual Research Report

強相関伝導系の物理A03強相関伝導系の理論

Research Project

Project/Area Number	06244104
Research Institution	Tokyo Institute of Technology
Principal Investigator	斯波弘行東京工業大学, 理学部, 教授 (30028196)
Co-Investigator(Kenkyū-buntansha)	倉本義夫東北大学, 理学研究科, 教授 (70111250) 長谷川彰新潟大学, 理学部, 教授 (40004329) 酒井治東北大学, 理学研究科, 助教授 (60005957) 三宅和正大阪大学, 基礎工学部, 教授 (90109265) 町田一成岡山大学, 理学部, 教授 (50025491)
Keywords	重い電子系 / 超伝導 / 近藤効果
Research Abstract	1.重い電子超伝導体UPt_3の超伝導の秩序パラメーターと超伝導機構実験グループの北岡ら(阪大)によってUPt_3の温度-磁場相図が決められつつあり、これに対応して町田と大見により三重項超伝導による解釈が進んだ。スピン軌道相互作用の大きさの評価が次の課題である。 2.U.を希薄に不純物を含む系の近藤効果の理論的研究が古賀・斯波、酒井・清水、三宅によってなされた。結晶場により非クラマ-ス二重項が基底状態として実現し、励起状態がある程度離れているときに2チャンネル近藤効果による非フェルミ流体が実現し、励起状態が近いとフェルミ流体が実現することが示された。非フェルミ流体の性格についても物理量の計算が酒井・清水によりなされ、網塚ら(北大)の実験結果の説明が可能になった。 3.四重極モーメントの秩序の揺らぎについて椎名・斯波、倉本らによって研究がなされCeB_6及びそのLa希釈系の実験の進展と合わせ、次年度更に発展が期待出来る。 4.重い電子系の異常Hall効果の理論が紺谷・山田により提出された。

Research Products
(38 results)

All Other

All Publications (38 results)

[Publications] M.Koga and H.Shiba: "A New Tyre of Fermi-Liquid Fixed Point in Kondo Effect Due to(s.f)^2 Configuration" J.Phys Soc.Jpn. 65,No.9. 3007-3015 (1996)
[Publications] M.Matsumoto and H.Shiba: "Coexistence of Different Symmetry Order Parameters rear a Sutftace in d-Wavs Supercorductors III" J.Phys.Soc.Jpn.65,No.8. 2194-2203 (1996)
[Publications] K.Penc,K.Hcellberg,F.Mila and H.Shiba: "Shadow Band in the One Dimensional Large-U Hubbard Model" Phys.Rev.Lett.77,No.7. 1390-1393 (1996)
[Publications] K.Penc,F.Mila and H.Shiba: "Spectral Function of the 1.D Hubbard Model in the U→∞Limit" J.Korean Phys.Soc.(Proc.Suppl). 29. S85-S91 (1996)
[Publications] k.Machida & T.Ohmi: "Possible pairing mechanism and double transitions in UPt_3" J.Phys.Soc.Jpn.65. 3456-3459 (1996)
[Publications] K.Machida,M.Ozaki & T.Ohmi: "Odd-parily pairing superconductivity" J.Phys.Soc.Jpn.65. 3720-3723 (1996)
[Publications] T.Ohmi & K.Machida: "Non-unitary triplet pairing state in UPt_3" J.Phys.Soc.Jpn.65. 4018-4025 (1996)
[Publications] M.Ichioka,N.Hayashi & K.Machida: "Local density of states in the vortex lattice in a type II superconductor" Phys.Rev.B. 55(in Press). (1997)
[Publications] N.Enomoto,M.Ichioka & K.Machida: "Ginzburg-Landau theory of d-wave pairing and fourfold symmetric vortex core structure" J.Phys.Soc.Jpn.66. 204-214 (1997)
[Publications] N.Hayashi,M.Ichioka & K.Machida: "Star-shaped local density of states around vortices in a type II superconductor" Phys.Rev.Lett.77. 4074-4077 (1997)
[Publications] H.Kusunose,K.Miyake,Y.Shimizu and G.Sakai: "Numerical Renormalization Group Study of Particle-Hole Symmetry Braking in Two-Channel Kondo Problem:Effect of Repulsion among Conduction Electrons and Potential Scatterin" Physical Review Letters. 76巻2号. 271-274 (1996)
[Publications] H.Ikeda and K.Miyake: "A Theory of Anisotropic Semiconductor of Heavy Fermions" Journal of the Physical Soicety of Japan. 65巻6号. 1769-1781 (1996)
[Publications] H.Kusunose and K.Miyake: "Two-Channel Kondo Model as a Fixed Point of Local Electron-Phonon Coupling System" Journal of the Physical Society of Japan. 65巻9号. 3032-3042 (1996)
[Publications] YuKihiro Shimizu: "Analysis for Softening of Elastic Constant and Specific Heaf in CePd_2Al_3-Quadrupole Response Induced by the Kondo Effect-" Journal of the Physical Society of Japan. 65・8. 2632-2639 (1996)
[Publications] Shunya Suzuki: "Magnetic Excitation and Transport Coefficients of the Impurity An-derson Model-Comparision between the 2-fold and 4-fold Models-" Journal of the Physical Society of Japan. 65・12. 4034-4044 (1996)
[Publications] Hiroshi Kumigashira: "High-resolution Angle-tesolved Photoemission Spectroscopy of CeBi" Physical Review. B54・13. 9341-9345 (1996)
[Publications] Osamu Sakai: "An Extended Impurity Anderson Model Showing Divergent Susceptibility and Decreasing Resistivity with Decreasing Temperature" Solid State Communications. 99・7. 461-465 (1996)
[Publications] Osamu Sakai: "Competition and Transitions of the Ground State Properties of the Impurity Anderson Model with Multi-Electron Occupancy" Solid State Communications. (印刷中).
[Publications] Wataru Izumida: "Many body Effects on Electron Tunneling through Quantum Dots in Aharonov-Bohm Circuit" Journal of the Physical Society of Japan. (印刷中).
[Publications] M.Higuchi and A.Hasegawa: "Fermi Surface of CeRu_2 within Local-Density-Functional Theory" J.Phys.Soc.Jpn.65・5. 1302-1311 (1996)
[Publications] H.Sugawara他: "Fermi Surface Properties in CeCo_2" J.Phys.Soc.Jpn.65・6. 1744-1750 (1996)
[Publications] M.Higuchi他: "Relativistic Band Thecory of Magnetic f-Electron Materials" Czechoslovak J.Phys.46. 1891-1892 (1996)
[Publications] M.Higuchi and A.Hasegawa: "A Relativistic Current-and Spin-Density Functional Theory and a Single-Particle Equation" J.Phys.Soc.Jpn.66・1. 149-157 (1997)
[Publications] M.Higuchi他: "Fermi Surfaces and Local Curvature Factors of Ce Compounds with Cubic Laves-Phase Structure." Physica B. (1997)
[Publications] G.Uminほか: "Mode-Covpling effects on the quadrupolar ordering in CeB_6" Solid State Comm. 97. 595-598 (1996)
[Publications] Y.Kato and Y.Kuramoto: "Fractional Exclusion Statisties for the Multicompment Sutherland Model" J.Phys.Soc.Jpn.65. 77-86 (1996)
[Publications] Y.Kuramoto and Y.kato: "Spincharge separation and fractional statistics in the buperymnentric t-J model at finite temperature" J.Korean.Phys.Soc.(Proc.Suppl). 29. S57-S62 (1996)
[Publications] Y.Kato and Y.Kuramoto: "Fraetial Exclusion Statistics for the t-J Model with Long-Range Interaction and Hoppiy" J.Phys.Soc.Jpn.65. 2361-2364 (1996)
[Publications] 加藤雄介、倉本義夫: "分数排他統計と1/γ^2相互作用を持つ可解模型" 固体物理. 31. 117-123 (1996)
[Publications] 倉本義夫: "強相関電子系の磁気秩序" 日本応用磁気学会誌. 21. 22-28 (1997)
[Publications] T.Ichinomiya and K.Yamada: "Damping Effect on Spin-Lattice Relaxation Rate in Organic Superconductors" J.Phys.Soc.Jpn.65,6. 1764-1768 (1996)
[Publications] K.Kanki and K.Yamada: "Theory of Cyclotron Resonance in Interacting Electron Systems on the Basis of the Fermi Liquid Theory" J.Phys.Soc.Jpn.66,4(予定). (1997)
[Publications] N.Shibata: "Friedel Oscillations in the One-Dimensional Kondo Lattice Model" Physical Review B. 54・20. 13495-13498 (1996)
[Publications] N.Shibata: "Large Fermi Surface of the One-Dimensional Kondo Lattice Model Observed by Friedel Oscillations" Physica B. (印刷中). (1997)
[Publications] K.Ueda: "Kondo Lattice Model-a Perspective of heavy electron phenomena-" Physca B. (印刷中). (1997)
[Publications] K.Ueda: "Recent Progress in Theoretical Understanding on Heavy Fermion Systems" 発表予定.
[Publications] N.Shibata: "One-Dimensional Kondo Lattice Model as a Tomonaga-Luttinger Liquid" Phys・Rev・B. (発表予定).
[Publications] 斯波弘行: "固体の電子論" 丸善, 220 (1996)

1996 Fiscal Year Annual Research Report

強相関伝導系の物理A03強相関伝導系の理論

Principal Investigator

斯波 弘行 東京工業大学, 理学部, 教授 (30028196)

Research Products

[Publications] M.Koga and H.Shiba: "A New Tyre of Fermi-Liquid Fixed Point in Kondo Effect Due to(s.f)^2 Configuration" J.Phys Soc.Jpn. 65,No.9. 3007-3015 (1996)

[Publications] M.Matsumoto and H.Shiba: "Coexistence of Different Symmetry Order Parameters rear a Sutftace in d-Wavs Supercorductors III" J.Phys.Soc.Jpn.65,No.8. 2194-2203 (1996)

[Publications] K.Penc,K.Hcellberg,F.Mila and H.Shiba: "Shadow Band in the One Dimensional Large-U Hubbard Model" Phys.Rev.Lett.77,No.7. 1390-1393 (1996)

[Publications] K.Penc,F.Mila and H.Shiba: "Spectral Function of the 1.D Hubbard Model in the U→∞Limit" J.Korean Phys.Soc.(Proc.Suppl). 29. S85-S91 (1996)

[Publications] k.Machida & T.Ohmi: "Possible pairing mechanism and double transitions in UPt_3" J.Phys.Soc.Jpn.65. 3456-3459 (1996)

[Publications] K.Machida,M.Ozaki & T.Ohmi: "Odd-parily pairing superconductivity" J.Phys.Soc.Jpn.65. 3720-3723 (1996)

[Publications] T.Ohmi & K.Machida: "Non-unitary triplet pairing state in UPt_3" J.Phys.Soc.Jpn.65. 4018-4025 (1996)

[Publications] M.Ichioka,N.Hayashi & K.Machida: "Local density of states in the vortex lattice in a type II superconductor" Phys.Rev.B. 55(in Press). (1997)

[Publications] N.Enomoto,M.Ichioka & K.Machida: "Ginzburg-Landau theory of d-wave pairing and fourfold symmetric vortex core structure" J.Phys.Soc.Jpn.66. 204-214 (1997)

[Publications] N.Hayashi,M.Ichioka & K.Machida: "Star-shaped local density of states around vortices in a type II superconductor" Phys.Rev.Lett.77. 4074-4077 (1997)

[Publications] H.Kusunose,K.Miyake,Y.Shimizu and G.Sakai: "Numerical Renormalization Group Study of Particle-Hole Symmetry Braking in Two-Channel Kondo Problem:Effect of Repulsion among Conduction Electrons and Potential Scatterin" Physical Review Letters. 76巻2号. 271-274 (1996)

[Publications] H.Ikeda and K.Miyake: "A Theory of Anisotropic Semiconductor of Heavy Fermions" Journal of the Physical Soicety of Japan. 65巻6号. 1769-1781 (1996)

[Publications] H.Kusunose and K.Miyake: "Two-Channel Kondo Model as a Fixed Point of Local Electron-Phonon Coupling System" Journal of the Physical Society of Japan. 65巻9号. 3032-3042 (1996)

[Publications] YuKihiro Shimizu: "Analysis for Softening of Elastic Constant and Specific Heaf in CePd_2Al_3-Quadrupole Response Induced by the Kondo Effect-" Journal of the Physical Society of Japan. 65・8. 2632-2639 (1996)

[Publications] Shunya Suzuki: "Magnetic Excitation and Transport Coefficients of the Impurity An-derson Model-Comparision between the 2-fold and 4-fold Models-" Journal of the Physical Society of Japan. 65・12. 4034-4044 (1996)

[Publications] Hiroshi Kumigashira: "High-resolution Angle-tesolved Photoemission Spectroscopy of CeBi" Physical Review. B54・13. 9341-9345 (1996)

[Publications] Osamu Sakai: "An Extended Impurity Anderson Model Showing Divergent Susceptibility and Decreasing Resistivity with Decreasing Temperature" Solid State Communications. 99・7. 461-465 (1996)

[Publications] Osamu Sakai: "Competition and Transitions of the Ground State Properties of the Impurity Anderson Model with Multi-Electron Occupancy" Solid State Communications. (印刷中).

[Publications] Wataru Izumida: "Many body Effects on Electron Tunneling through Quantum Dots in Aharonov-Bohm Circuit" Journal of the Physical Society of Japan. (印刷中).

[Publications] M.Higuchi and A.Hasegawa: "Fermi Surface of CeRu_2 within Local-Density-Functional Theory" J.Phys.Soc.Jpn.65・5. 1302-1311 (1996)

[Publications] H.Sugawara他: "Fermi Surface Properties in CeCo_2" J.Phys.Soc.Jpn.65・6. 1744-1750 (1996)

[Publications] M.Higuchi他: "Relativistic Band Thecory of Magnetic f-Electron Materials" Czechoslovak J.Phys.46. 1891-1892 (1996)

[Publications] M.Higuchi and A.Hasegawa: "A Relativistic Current-and Spin-Density Functional Theory and a Single-Particle Equation" J.Phys.Soc.Jpn.66・1. 149-157 (1997)

[Publications] M.Higuchi他: "Fermi Surfaces and Local Curvature Factors of Ce Compounds with Cubic Laves-Phase Structure." Physica B. (1997)

[Publications] G.Uminほか: "Mode-Covpling effects on the quadrupolar ordering in CeB_6" Solid State Comm. 97. 595-598 (1996)

[Publications] Y.Kato and Y.Kuramoto: "Fractional Exclusion Statisties for the Multicompment Sutherland Model" J.Phys.Soc.Jpn.65. 77-86 (1996)

[Publications] Y.Kuramoto and Y.kato: "Spincharge separation and fractional statistics in the buperymnentric t-J model at finite temperature" J.Korean.Phys.Soc.(Proc.Suppl). 29. S57-S62 (1996)

[Publications] Y.Kato and Y.Kuramoto: "Fraetial Exclusion Statistics for the t-J Model with Long-Range Interaction and Hoppiy" J.Phys.Soc.Jpn.65. 2361-2364 (1996)

[Publications] 加藤雄介、倉本義夫: "分数排他統計と1/γ^2相互作用を持つ可解模型" 固体物理. 31. 117-123 (1996)

[Publications] 倉本義夫: "強相関電子系の磁気秩序" 日本応用磁気学会誌. 21. 22-28 (1997)

[Publications] T.Ichinomiya and K.Yamada: "Damping Effect on Spin-Lattice Relaxation Rate in Organic Superconductors" J.Phys.Soc.Jpn.65,6. 1764-1768 (1996)

[Publications] K.Kanki and K.Yamada: "Theory of Cyclotron Resonance in Interacting Electron Systems on the Basis of the Fermi Liquid Theory" J.Phys.Soc.Jpn.66,4(予定). (1997)

[Publications] N.Shibata: "Friedel Oscillations in the One-Dimensional Kondo Lattice Model" Physical Review B. 54・20. 13495-13498 (1996)

[Publications] N.Shibata: "Large Fermi Surface of the One-Dimensional Kondo Lattice Model Observed by Friedel Oscillations" Physica B. (印刷中). (1997)

[Publications] K.Ueda: "Kondo Lattice Model-a Perspective of heavy electron phenomena-" Physca B. (印刷中). (1997)

[Publications] K.Ueda: "Recent Progress in Theoretical Understanding on Heavy Fermion Systems" 発表予定.

[Publications] N.Shibata: "One-Dimensional Kondo Lattice Model as a Tomonaga-Luttinger Liquid" Phys・Rev・B. (発表予定).

[Publications] 斯波弘行: "固体の電子論" 丸善, 220 (1996)

斯波弘行東京工業大学, 理学部, 教授 (30028196)