1995 Fiscal Year Annual Research Report

モット転移系3d遷移金属酸化物の物質設計と物性開拓

Research Project

Project/Area Number	07237103
Research Institution	The University of Tokyo
Principal Investigator	十倉好紀東京大学, 大学院・工学系研究科, 教授 (30143382)
Co-Investigator(Kenkyū-buntansha)	高木英典東京大学, 物性研究所, 助教授 (40187935) 吉沢秀樹東京大学, 物性研究所, 助教授 (00174912) 高野幹夫京都大学, 化学研究所, 教授 (70068138) 熊谷健一北海道大学, 理学部物理学科, 教授 (70029560) 安岡弘志東京大学, 物性研究所, 教授 (50026027) 藤森淳東京大学, 大学院・理学系研究科, 助教授 (10209108)
Keywords	モット転移 / ペロブスカイト / 巨大磁気抵抗効果 / 3d遷移金属酸化物 / 絶縁体-金属転移 / 電荷整列 / スピンラダー / キャリヤード-ピング
Research Abstract	ペロブスカイト構造をもつモット転移系3d遷移金属酸化物およびド-ピング可能な量子スピン系の結晶合成・物質開発および物性測定を行った。特に、2重交換系Mn,Co酸化物について集中的な研究を行い、光分光、光電子分光測定によって電子構造についての重要な知見を得た。特に、Mn-O系ではスピン分極の変化によって、完全に交換分裂した伝導バンドの状態密度の移行とコヒーレントパートの成長が観測され、この系での強いスピン-電荷結合の特徴が明らかになった。また、巨大磁気抵抗効果に関連した電荷整列転移とその磁場効果については、磁場中での光分光測定、磁場・圧力下での中性子散乱およびNMR測定を開始し、詳しい知見が得られ始めた。特に、巨大磁気抵抗を伴う磁場誘起相転移に関して、電荷整列融解機構が中性子散乱等により初めて確認された。今後、更に精密なフィリング制御によって、特異なスピン電荷-格子結合による新しい物性の舞台を探索できるようになってきた。一方、スピンラダー系Cu酸化物、ハルデン系Ni酸化物などスピンギャップを有する系でも研究の進展があった。特に、スピンダラ-系銅酸化物でド-ピングによる絶縁体-金属転移が見い出された。これについても、電荷・スピンダイナミックスの両面から、詳しい物性の検討を始めた。これら、3d遷移金属酸化物への新物性(磁場誘起効果を含む)は、全世界的に関心が高まりつつあるが、本計画研究班の研究はその中で主導的位置を占めている。

Research Products
(43 results)

All Other

All Publications (43 results)

[Publications] T.Katsufuji,Y.Okimoto,and Y.Tokura: "Spectral Weight Transfer of the Optical Conductivity in Doped Mott Insulators" Phys.Rev.Lett.75. 3497-3500 (1995)
[Publications] T.Katsuhuji,M.Kasai,and Y.Tokura: "In-Plane and Out-of-Plane Optical Spectra of Sr2Ru04" Phys.Rev.Lett.76. 126-129 (1996)
[Publications] S.Yamaguchi,Y.Okimoto,H.Taniguchi,and Y.Tokura: "Spin-State Transition and High-Spin Polarons in LaCoO3" Phys.Rev.B. (in press). (1996)
[Publications] T.Saitoh,A.Sekiyama,T.Mizokawa,A.Fujimori,K.Ito,H.Nakamura,and M.Shiga: "Unusal Mass Renormalization in FeSi Studied by High Resolusion Photoemission" Solid State Commun.95. 307-311 (1995)
[Publications] T.Mizokawa,and A.Fujimori: "Unrestricted Hartree-Fock Study of Transition-Metal Oxides:Spin and Ordering in Perovskite type Lattice" Phys.Rev.B. 51. 12880-12883 (1995)
[Publications] T.Saitoh,A.E.Bocquet,T.Mizokawa,H.Namatame,A.Fujimori,M.Abbate,Y.Takeda,and M.Takano: "Eletronic Structure of Lal-xSrxMnO3 Studied by Photoemission and X-Ray Absorption Spectroscopy" Phys.Rev.B. 51. 13942-13952 (1995)
[Publications] A.E.Bocquet,T.Mizokawa,T.Saitoh,A.Fujimori,M.Matoba,S.Anzai,and S.Suga: "The Inclusion of Charge Transfer to the Couduction Band in a Cluster Model Analysis of Core Level Line Shapes" J.Phys.Condens Matter.7. L411-L414 (1995)
[Publications] K.Morikawa,T.Mizokawa,K.Kobayashi,A.Fujimori,H.Eisaki,S.Uchide,F.Iga,and Y.Nishihara: "Spectral Weight Transfer and Mass Renormalization in Mott-Hubbard Systems SrVO3 and CaVO3:Influence of Long-Range Coulomb Interaction" Phys.Rev.B. 52. 13711-13714 (1995)
[Publications] T.Saitoh,A.E,Bocquet,T.Mizokawa,and A.Fujimori: "Systematic Variation of the Electronic Structure of 3d Transition-Metal Compounds" Phys.Rev.B. 52. 7934-7938 (1995)
[Publications] T.Mizokawa,A.Fujimori,T.Arima,Y.Tokura,N.Mori,and J.Akimitsu: "Electronic Structure of PrNiO3 Studied by Photoemission and X-Ray Absorption Spectroscopy:Band Gap and Orbital Ordering" Phys.Rev.B. 52. 13865-13872 (1996)
[Publications] A.Fujimori,K.Kobayashi,T.Mizokawa,K.Mamiya,H.Eisaki,H.Takagi,S.Uchida,R.J.Cava,J.J.Krajewski,and W.F.Peck Jr.: "Spectral Weight Transfer and Mass Renormalization in LnNi2B2C(Ln=Y and La)" J.Phys.Chem.Solids. 56. 1875-1876 (1995)
[Publications] S.Shin,A.Agui,M.Watanabe,M.Fujisawa,Y.Tezuka,T.Torii,K.Kobayashi,A.Fujimori,M.Hiromaru,and H.Takagi: "Soft X-Rey Emissoin Studies of YNi2B2C and La Ni2B2C Observation of the B 2p-and C 2p-Partial Density of State" Phys.Rev.B. 52. 15082-15085 (1996)
[Publications] A.Goto,et.al.: "Carier Concentration Dependence of the Pseudo Spin Gap Behavior in LaBa2Cu3Oy" J.Phys.Soc,Jpn.64. 367-370 (1995)
[Publications] Y.Ueda,et.al.: "Microscopic Magnetic Properties of V2O3_+ and(Y1+xTix)203" J.Mag.Magn.Mat.147. 195-197 (1995)
[Publications] A.I.Rykov,et.al.: "Charge Transfer to the Local Singlet States as a Function of Li Content in La2Cu1_<-x>LiO4" Physica C. 247. 327-339 (1995)
[Publications] H.Yasuoka: "Spin and Charge Differentiation in Doped CuO2 Planes Observed by Cu NMR/NQR Spectra" Spectroscopy of Mott Insulators and Correlated Metals(Springer-Verlag). 213-220 (1995)
[Publications] T.Ohama,et.al.: "NMR Study of Magnetic Excitations in CeNiSn" J.Phys.Soc,Jpn.64. 4566-4569 (1995)
[Publications] K.Kumagai,S.Tsuji,T.Hagino,and S.Nagata: "NMR Studies of Superconduetivity and Metal-Insulator Transition in Cu Spinel CuM2X4(M=Rh,Ir and x=S,Se)" Spectnoscopy of Mott Insulators and Correlated Merals(Springer-Verlag). 255-264 (1995)
[Publications] T.Hagino,Y.Seki,N.Wada,S.Tsuji,T.Shirane,K.Kumagai,and S.Nagata: "Superconductivity in Spinel-Type Compounds CuRh2S4 and CuRh2Se4" Phys.Rev.B. 51. 12673-12684 (1995)
[Publications] Y.Matsuda,M.B.Gaifullin,K.Kumagai,K.Kadpwalo.and T.Mochiku: "Collective Josephson Plasma Resonance in the Vortex State of Bi2Sr2CaCu208_+delta" Phys.Rev.Lett.75. 4512-4515 (1995)
[Publications] Y.Matsuda,T.Nagaoka,G.Suzuki,K.Kumagai,M.Suzuki,M.Sera,M.Hiroi,and K.Kobayashi: "Hall Anomaly in the Vortex State of La2_<-x>SrxCuO4" Phys.Rev.B. 52. R15 749-R15 752 (1995)
[Publications] Y.Matsuda,M.B.Gaifullin,K.Kumagai,K.Kadowaki,and T.Mochiku: "Microwave Responce in the Vortex State of Bi2Sr2CaCu208_+delta" Physica C. (in press). (1996)
[Publications] S.Ikeda,K.Kumagai,J.Jiang,M.S.Lin,C.C.Lai,and H.C.Ku: "NMR Study of Quaternary Superconductore RT2BC(R=Y,La,Tn and T=Ni,Pd,Pt)" Physica B. (toBbe plished). (1995)
[Publications] K.Kojima,A.Keren,G.M.Luke,B.Nachumi,W.D.Wu,Y.J.Uemura,M.Azuma,and M.Takano: "Magnetic Behavior of the 2-Leg and 3-Leg Spin Ladder Cuprates Sm-1Cun+102n" Phys.Rev.Lett.74. 2812-2815 (1995)
[Publications] D.N.Argyriou,J.D.Jorgensen,R.L.Hitterman,Z.Hiroi,N.Kobayashi,and M.Takano: "Structure and Superconductivity without Apical Oxygens in (Ca,Na)2CuO2Cl2" Phys.Rev.B. 51. 8434-8437 (1995)
[Publications] Z.Hiroi,and M.Takano: "Absence of Superconductivity in the Doped Autiferromagnetic Spin-Ladder Compound(La,Sr)CuO2.5" Nature. 377. 41-43 (1995)
[Publications] K.Yamaura,Z.Hiroi,M.Takano,S.Hahakura,J.Shimoyama,K.Kishio: "Ba-Free Mercury-Based Superconductors(Hg,M)Sr2Can-1CunOy(M=Re,Cr,Mo;n=2,3)Synthesized Under High-Pressure" 粉体および粉末治金. 42. 798-803 (1995)
[Publications] K.Ishida,Y.Kitaoka,Y.Tokushige,S.Matsumoto,K.Asayama,M.Azuma,Z.Hiroi,and M.Takano: "Spin Correlation and Spin Gap in Quasi-1D Spin-1/2 Cuprate Oxides…63Cu-NMR Study…" Phys.Rev.B. 53(in press). (1996)
[Publications] K.Yamaura,J.Shimoyama,S.Hahakura,Z.Hiroi,M.Takano,and K.Kishio: "High-Presure Synthesis and Superconductivity of a Be Free Mercury-Based Superconductor(Hg0.75 Re0.25)Sr2Ca2Cu3Oy" Physica C. 246. 351-356 (1995)
[Publications] M.Takano: "High-Pressure Effects on the Fomation of Complex Cupric Oxides" Solid State Chem.(ed.C.N.R.Rao):Naosa Publishing House,New Delhi. 97-111 (1995)
[Publications] H.Yoshizawa,H.Kawano,Y.Tomioka,and Y.Tokura: "Neutron-Diffraction Study of the Magneric-Field-Induced Metal-Insulator Transition in Pr0.7Ca0.3Mn03" Phys.Rev.B. 52. R13 145-R13 148 (1995)
[Publications] H.Kawano,et.al.: "Canted Antiferromagnetism in an Insulating Lightly Doped La1-xSrxMnO3 with x<0.17" Phys.Rev.B. 53(in press). (1996)
[Publications] H.Yoshizawa,et.al.: "Magnetic-Field-Induced Metal-Insulator Taransition in Pr0.7Ca0.3MnO3" J.Phys.Soc,Jpn.65(to be published.). (1996)
[Publications] T.Kimura,S.Miyasaka,H.Takagi,et.al.: "In-Plane and Out-Plane Magnetoresistance in La2_<-x>SrxCuO4 Single Crystals" Phys.Rev.B. March(to be published.). (1996)
[Publications] S.Yamaguchi,H.Taniguchi,H.Takagi,T.Arima,and Y.Tokura: "Magnetoresistance in Metallic Crystals of Lal-xSrxCoO3" J.Phys.Soc,Jpn.64. 1855-1888 (1995)
[Publications] S.Shin,M.Hinomaru,H.Takagi,et.al.: "Sofe-Xray-Emission Studies of YNi2B2Cand LaNi2B2C:Observation of B 2p and C 2p Partial Density of States" Phys.Rev.B. 52. 15 082-15 085 (1995)
[Publications] M.Tokunaga,N.Miura,H.Takagi,and R.J.Cava: "De Haas-Van Alphen Oscillations of LuNi2B2C in Pulsed High Magnetic Fields" J.Phys.Soc,Jpn.64. 1458-1461 (1995)
[Publications] 高木英典: "ホウ素・炭素を含む新しい四元化合物超伝導体の展開" 応用物理. 65. 310-317 (1995)
[Publications] 高木英典: "新しい高温超伝導物質-物質開発の進展" 科学. 64. 546-555 (1995)
[Publications] H.Takagi,H.Eisaki,S.Uchide,and R.J.Cava: "Charge Transport Properties of Strongly Correlated Metals near Charge Transfer Insulator to Metal Transition" Spectnoscopy of Mott Insulators and Correlatell Metals(Springer-Verlag). 185-193 (1995)
[Publications] H.Takagi: "Borocarbide Superconductors-Materials and Physical Properties" Advances in Superconductivity VII(Springer-Verlag). 9-14 (1995)
[Publications] A.Fujimori,and Y.Tokura: "Spectroscopy of Mott Insulators and Correlated Metals" Springer-Verlag, 265 (1995)
[Publications] M.Takano: "Perspectives in Solid State Chemistry(ed.C.N.R.Rao)" Narosa Publishing House,New Delhi, 15 (1995)

1995 Fiscal Year Annual Research Report

モット転移系3d遷移金属酸化物の物質設計と物性開拓

Principal Investigator

十倉 好紀 東京大学, 大学院・工学系研究科, 教授 (30143382)

Research Products

[Publications] T.Katsufuji,Y.Okimoto,and Y.Tokura: "Spectral Weight Transfer of the Optical Conductivity in Doped Mott Insulators" Phys.Rev.Lett.75. 3497-3500 (1995)

[Publications] T.Katsuhuji,M.Kasai,and Y.Tokura: "In-Plane and Out-of-Plane Optical Spectra of Sr2Ru04" Phys.Rev.Lett.76. 126-129 (1996)

[Publications] S.Yamaguchi,Y.Okimoto,H.Taniguchi,and Y.Tokura: "Spin-State Transition and High-Spin Polarons in LaCoO3" Phys.Rev.B. (in press). (1996)

[Publications] T.Saitoh,A.Sekiyama,T.Mizokawa,A.Fujimori,K.Ito,H.Nakamura,and M.Shiga: "Unusal Mass Renormalization in FeSi Studied by High Resolusion Photoemission" Solid State Commun.95. 307-311 (1995)

[Publications] T.Mizokawa,and A.Fujimori: "Unrestricted Hartree-Fock Study of Transition-Metal Oxides:Spin and Ordering in Perovskite type Lattice" Phys.Rev.B. 51. 12880-12883 (1995)

[Publications] T.Saitoh,A.E.Bocquet,T.Mizokawa,H.Namatame,A.Fujimori,M.Abbate,Y.Takeda,and M.Takano: "Eletronic Structure of Lal-xSrxMnO3 Studied by Photoemission and X-Ray Absorption Spectroscopy" Phys.Rev.B. 51. 13942-13952 (1995)

[Publications] A.E.Bocquet,T.Mizokawa,T.Saitoh,A.Fujimori,M.Matoba,S.Anzai,and S.Suga: "The Inclusion of Charge Transfer to the Couduction Band in a Cluster Model Analysis of Core Level Line Shapes" J.Phys.Condens Matter.7. L411-L414 (1995)

[Publications] K.Morikawa,T.Mizokawa,K.Kobayashi,A.Fujimori,H.Eisaki,S.Uchide,F.Iga,and Y.Nishihara: "Spectral Weight Transfer and Mass Renormalization in Mott-Hubbard Systems SrVO3 and CaVO3:Influence of Long-Range Coulomb Interaction" Phys.Rev.B. 52. 13711-13714 (1995)

[Publications] T.Saitoh,A.E,Bocquet,T.Mizokawa,and A.Fujimori: "Systematic Variation of the Electronic Structure of 3d Transition-Metal Compounds" Phys.Rev.B. 52. 7934-7938 (1995)

[Publications] T.Mizokawa,A.Fujimori,T.Arima,Y.Tokura,N.Mori,and J.Akimitsu: "Electronic Structure of PrNiO3 Studied by Photoemission and X-Ray Absorption Spectroscopy:Band Gap and Orbital Ordering" Phys.Rev.B. 52. 13865-13872 (1996)

[Publications] A.Fujimori,K.Kobayashi,T.Mizokawa,K.Mamiya,H.Eisaki,H.Takagi,S.Uchida,R.J.Cava,J.J.Krajewski,and W.F.Peck Jr.: "Spectral Weight Transfer and Mass Renormalization in LnNi2B2C(Ln=Y and La)" J.Phys.Chem.Solids. 56. 1875-1876 (1995)

[Publications] S.Shin,A.Agui,M.Watanabe,M.Fujisawa,Y.Tezuka,T.Torii,K.Kobayashi,A.Fujimori,M.Hiromaru,and H.Takagi: "Soft X-Rey Emissoin Studies of YNi2B2C and La Ni2B2C Observation of the B 2p-and C 2p-Partial Density of State" Phys.Rev.B. 52. 15082-15085 (1996)

[Publications] A.Goto,et.al.: "Carier Concentration Dependence of the Pseudo Spin Gap Behavior in LaBa2Cu3Oy" J.Phys.Soc,Jpn.64. 367-370 (1995)

[Publications] Y.Ueda,et.al.: "Microscopic Magnetic Properties of V2O3_+ and(Y1+xTix)203" J.Mag.Magn.Mat.147. 195-197 (1995)

[Publications] A.I.Rykov,et.al.: "Charge Transfer to the Local Singlet States as a Function of Li Content in La2Cu1_<-x>LiO4" Physica C. 247. 327-339 (1995)

[Publications] H.Yasuoka: "Spin and Charge Differentiation in Doped CuO2 Planes Observed by Cu NMR/NQR Spectra" Spectroscopy of Mott Insulators and Correlated Metals(Springer-Verlag). 213-220 (1995)

[Publications] T.Ohama,et.al.: "NMR Study of Magnetic Excitations in CeNiSn" J.Phys.Soc,Jpn.64. 4566-4569 (1995)

[Publications] K.Kumagai,S.Tsuji,T.Hagino,and S.Nagata: "NMR Studies of Superconduetivity and Metal-Insulator Transition in Cu Spinel CuM2X4(M=Rh,Ir and x=S,Se)" Spectnoscopy of Mott Insulators and Correlated Merals(Springer-Verlag). 255-264 (1995)

[Publications] T.Hagino,Y.Seki,N.Wada,S.Tsuji,T.Shirane,K.Kumagai,and S.Nagata: "Superconductivity in Spinel-Type Compounds CuRh2S4 and CuRh2Se4" Phys.Rev.B. 51. 12673-12684 (1995)

[Publications] Y.Matsuda,M.B.Gaifullin,K.Kumagai,K.Kadpwalo.and T.Mochiku: "Collective Josephson Plasma Resonance in the Vortex State of Bi2Sr2CaCu208_+delta" Phys.Rev.Lett.75. 4512-4515 (1995)

[Publications] Y.Matsuda,T.Nagaoka,G.Suzuki,K.Kumagai,M.Suzuki,M.Sera,M.Hiroi,and K.Kobayashi: "Hall Anomaly in the Vortex State of La2_<-x>SrxCuO4" Phys.Rev.B. 52. R15 749-R15 752 (1995)

[Publications] Y.Matsuda,M.B.Gaifullin,K.Kumagai,K.Kadowaki,and T.Mochiku: "Microwave Responce in the Vortex State of Bi2Sr2CaCu208_+delta" Physica C. (in press). (1996)

[Publications] S.Ikeda,K.Kumagai,J.Jiang,M.S.Lin,C.C.Lai,and H.C.Ku: "NMR Study of Quaternary Superconductore RT2BC(R=Y,La,Tn and T=Ni,Pd,Pt)" Physica B. (toBbe plished). (1995)

[Publications] K.Kojima,A.Keren,G.M.Luke,B.Nachumi,W.D.Wu,Y.J.Uemura,M.Azuma,and M.Takano: "Magnetic Behavior of the 2-Leg and 3-Leg Spin Ladder Cuprates Sm-1Cun+102n" Phys.Rev.Lett.74. 2812-2815 (1995)

[Publications] D.N.Argyriou,J.D.Jorgensen,R.L.Hitterman,Z.Hiroi,N.Kobayashi,and M.Takano: "Structure and Superconductivity without Apical Oxygens in (Ca,Na)2CuO2Cl2" Phys.Rev.B. 51. 8434-8437 (1995)

[Publications] Z.Hiroi,and M.Takano: "Absence of Superconductivity in the Doped Autiferromagnetic Spin-Ladder Compound(La,Sr)CuO2.5" Nature. 377. 41-43 (1995)

[Publications] K.Yamaura,Z.Hiroi,M.Takano,S.Hahakura,J.Shimoyama,K.Kishio: "Ba-Free Mercury-Based Superconductors(Hg,M)Sr2Can-1CunOy(M=Re,Cr,Mo;n=2,3)Synthesized Under High-Pressure" 粉体および粉末治金. 42. 798-803 (1995)

[Publications] K.Ishida,Y.Kitaoka,Y.Tokushige,S.Matsumoto,K.Asayama,M.Azuma,Z.Hiroi,and M.Takano: "Spin Correlation and Spin Gap in Quasi-1D Spin-1/2 Cuprate Oxides…63Cu-NMR Study…" Phys.Rev.B. 53(in press). (1996)

[Publications] K.Yamaura,J.Shimoyama,S.Hahakura,Z.Hiroi,M.Takano,and K.Kishio: "High-Presure Synthesis and Superconductivity of a Be Free Mercury-Based Superconductor(Hg0.75 Re0.25)Sr2Ca2Cu3Oy" Physica C. 246. 351-356 (1995)

[Publications] M.Takano: "High-Pressure Effects on the Fomation of Complex Cupric Oxides" Solid State Chem.(ed.C.N.R.Rao):Naosa Publishing House,New Delhi. 97-111 (1995)

[Publications] H.Yoshizawa,H.Kawano,Y.Tomioka,and Y.Tokura: "Neutron-Diffraction Study of the Magneric-Field-Induced Metal-Insulator Transition in Pr0.7Ca0.3Mn03" Phys.Rev.B. 52. R13 145-R13 148 (1995)

[Publications] H.Kawano,et.al.: "Canted Antiferromagnetism in an Insulating Lightly Doped La1-xSrxMnO3 with x<0.17" Phys.Rev.B. 53(in press). (1996)

[Publications] H.Yoshizawa,et.al.: "Magnetic-Field-Induced Metal-Insulator Taransition in Pr0.7Ca0.3MnO3" J.Phys.Soc,Jpn.65(to be published.). (1996)

[Publications] T.Kimura,S.Miyasaka,H.Takagi,et.al.: "In-Plane and Out-Plane Magnetoresistance in La2_<-x>SrxCuO4 Single Crystals" Phys.Rev.B. March(to be published.). (1996)

[Publications] S.Yamaguchi,H.Taniguchi,H.Takagi,T.Arima,and Y.Tokura: "Magnetoresistance in Metallic Crystals of Lal-xSrxCoO3" J.Phys.Soc,Jpn.64. 1855-1888 (1995)

[Publications] S.Shin,M.Hinomaru,H.Takagi,et.al.: "Sofe-Xray-Emission Studies of YNi2B2Cand LaNi2B2C:Observation of B 2p and C 2p Partial Density of States" Phys.Rev.B. 52. 15 082-15 085 (1995)

[Publications] M.Tokunaga,N.Miura,H.Takagi,and R.J.Cava: "De Haas-Van Alphen Oscillations of LuNi2B2C in Pulsed High Magnetic Fields" J.Phys.Soc,Jpn.64. 1458-1461 (1995)

[Publications] 高木英典: "ホウ素・炭素を含む新しい四元化合物超伝導体の展開" 応用物理. 65. 310-317 (1995)

[Publications] 高木英典: "新しい高温超伝導物質-物質開発の進展" 科学. 64. 546-555 (1995)

[Publications] H.Takagi,H.Eisaki,S.Uchide,and R.J.Cava: "Charge Transport Properties of Strongly Correlated Metals near Charge Transfer Insulator to Metal Transition" Spectnoscopy of Mott Insulators and Correlatell Metals(Springer-Verlag). 185-193 (1995)

[Publications] H.Takagi: "Borocarbide Superconductors-Materials and Physical Properties" Advances in Superconductivity VII(Springer-Verlag). 9-14 (1995)

[Publications] A.Fujimori,and Y.Tokura: "Spectroscopy of Mott Insulators and Correlated Metals" Springer-Verlag, 265 (1995)

[Publications] M.Takano: "Perspectives in Solid State Chemistry(ed.C.N.R.Rao)" Narosa Publishing House,New Delhi, 15 (1995)

十倉好紀東京大学, 大学院・工学系研究科, 教授 (30143382)