1990 Fiscal Year Annual Research Report

高温有機超伝導体の開発

Research Project

Project/Area Number	63060004
Research Institution	Tokyo Metropolitan University
Principal Investigator	池本勲東京都立大学, 理学部, 教授 (00011601)
Co-Investigator(Kenkyū-buntansha)	齋藤軍治京都大学, 理学部, 教授 (40132724)
Keywords	有機超伝導体 / ラジカル塩 / BEDTーTTF / DMET / 非対称電子供与体 / 電気伝導度 / 相転移 / 同位体効果
Research Abstract	1.代表的なDMET塩の反射スペクトルと熱電能を測定し電子状態を調べた.PF_6塩では反射スペクトルから求めた伝導度スペクトルにもギャップが存在することがわかり,熱電能も半導体的温度依存性を示した.BF_4塩は金属に特徴的なスペクトルと熱電能の温度変化を示した.二種のカラムではa軸に沿ったカラムの方がバンド幅が大きい.金属的電気伝導度を示すグル-プ3と4の塩では,カラム内ではグル-プ3の塩の方が相互作用が大きいことを明かにし,グル-プ3の塩の方が次元性が小さいという我々の考え方を実証した.2.DMETの誘導体である非対称なドナ-DMPT,DIMET,METを合成し,それらのラジカル塩の物性を研究したが,新たな超伝導体は合成できなかった.3.κー(BEDTーTTF)_2[Cu(NCS)_2]のTcはBEDTーTTFの水素体では10.4K,重水素体では11.1Kである.BEDTーTTFの外側エチレン基の ^<12>Cをすべて ^<13>Cに置換した錯体のTcはH体とD体の中間に位置し,この系のTcはBCS理論から予想される同位体効果とは逆である.外側エチレン基の原子置換により逆同位体効果が見られることにより,エチレン基のなんらかの振動またはエチレン基・アニオンのなんらかの相互作用がこの系の超伝導に寄与していることを明らかにした.κー(BEDTーTTF)_2Cu[N(CN)_2]Br錯体のBEDTーTTF水素体でのTcは11.8Kであるが,重水素体のTcは11.3Kと低く,通常の同位体効果を示す.4.これらの2種の錯体の格子定数の変化を室温から14OKまで比較し,ドナ-層と陰イオン層間の相互作用とTcの関係を調べた.5.金属ハロゲノ,擬ハロゲノ酸塩を対イオンとする多数の錯体を,2次元的でドナ-層と強い原子接触をもつ陰イオン層を導入することを設計指針としてスクリ-ン探索した.支持電解質としてNaN(CN)_2CuCN,NaN(CN)_2ーCuCl,CuBrーC(CN)_3,ROーC[C(CN)_2]_2などを,また酸素,セレン,テルルを含むドナ-を用いた.

Research Products

(39 results)

All Other

All Publications (39 results)

[Publications] Y.Ishikawa: "Crystal Structure of the Organic Superconductor,(DMET)_2AuCl_2" Acta Crystallogr.C46. 1652-1655 (1989)
[Publications] M.ーH.Whangbo: "Structural and Electrical Properties of κーphase Organic Donor Salts:κー(DMET)_2AuBr_2 and κー(BEDTーTTF)_4Hg_3Cl_8" Mol.Cryst.Liq.Cryst.18. 1-15 (1990)
[Publications] I.Ikemoto: "Organic Superconductors,(DMET)_2X" Mol.Cryst.Liq.Cryst.181. 185-195 (1990)
[Publications] K.Saito: "Thermdynamic Study of the Incommensurate Phase Transitions in Crystalline Bis(4ーchlorophenyl)sulfone" Thermochim.Acta. 163. 241-248 (1990)
[Publications] K.Saito: "Tetramerized Structure of (DMET)_2ReO_4 and Its Apparent Matallic Behavior in Resistivity" Bull.Chem.Soc.Jpn.63. 1865-1870 (1990)
[Publications] K.Kikuchi,G.saito and S.kagoshima Eds.: "Physical Properties and Crystal Structures of DMET Superconductors and Conductors" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 230-233 (1990)
[Publications] K.Murata,G.Saito and S.Kagoshima Eds.: "Superconducutvity and Spin Density Waves in (DMET)_2Au(CN)_2" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 234-237 (1990)
[Publications] K.saito,G.Saito and S.Kagoshima Eds.: "Phase Transition of the Organic Metal (DMET)_2Au(CN)_2 at 180 K" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 238-241 (1990)
[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "Antiferromagnetic Transitions in (DMET)_2X and (DMPT)_2X" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 242-245 (1990)
[Publications] Y.Ishikawa: "Crystal Structure of the Organic Metal (DMET)_2BF_4 with Two Columns along Two Crystallographic Axes"" Bull.Chem.Soc.Jpn.64. 212-215 (1991)
[Publications] G.Saito: "Preparation and Properties of Organic Superconductor κー(BEDTーTTF)_2[Cu(NCS)_2] and Its Related Materials" Mat.Res.Soc.Symp.Proc.173. 95-106 (1990)
[Publications] G.Saito: "Organic Superconductor κー(BEDTーTTF)_2[Cu(NCS)_2] and Its Related Materials" Mol.Cryst.Liq.Cryst.181. 65-79 (1990)
[Publications] H.Mori,G.Saito and S.Kagoshima Eds.: "An Ambient Pressure Organic Superconductor κー(BEDTーTTFーh_8 and d_8)Cu(NCS)_2 with Tc Higher than 10 K" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 150-154 (1990)
[Publications] T.Nakamura: "Novel Structural and Electronic Properties of (MDTーTTF)_2Au(CN)_2" Solid State Commun.75. 583-586 (1990)
[Publications] T.Enoki,G.Saito and S.Kagoshima Eds.: "Electronic Properties of Charge Transfer Complexes of BEDTーTTF and Related Donors with Transition Metal Halides" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 294-297 (1990)
[Publications] Y.Iwasa: "Temperature Induced NeutralーIonic Transition in TetramethylbenzidineーTetracyanoquinodimethane" Phys.Rev.B42. 2374-2377 (1990)
[Publications] S.Koshihara: "Photoinduced Valence Instability in the Organic Molecular Compound TetrathiafulvaleneーpーChloranil(TTFーCA)" Phys.Rev.B42. 6853-6856 (1990)
[Publications] Y.Iwasa,G.saito and S.Kagoshima Eds.: "Dynamics of Charged Domain Walls in Semiconducting Charge Transfer Compounds" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 319-323 (1990)
[Publications] T.Takahashi,G.Saito and S.Kagoshima Eds.: " ^1H SpinーLattice Relaxation in the SDW State of (TMTSF)_2PF_6 Under Pressure" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 107-110 (1990)
[Publications] S.Kagoshima,G.Saito and S.Kagoshima Eds.: "2KーSuperconducting State in the Organic Superconductor βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 126-129 (1990)
[Publications] Y.Nogami,G.Saito and S.Kagoshima Eds.: "A Change of the Incommensurate Superstructure in the Organic Superconductor βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 130-133 (1990)
[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "Effect of Annealing on the Superconductivity of βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 134-137 (1990)
[Publications] T.Takahashi,G.Saito and S.Kagoshima Eds.: "Nuclear SpinーLattice Relaxation in the Organic Superconductor (BEDTーTTF)_2Cu(NCS)_2:Measurements by the Field Cycling Technique" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 155-158 (1990)
[Publications] Y.Li,G.Saito and S.Kagoshima Eds.: "ChargeーCarrier Drift Mobilities and Phase Transition in Tetrakis(octylthio)tetrathiafulvalene,TTC_8ーTTF"" Bull.Chem.Soc.Jpn.63. 1857-1859 (1990)
[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "MagneticーField Penetration Depth of (BEDTーTTF)_2Cu(NCS)_2 Determinde by Complex Susceptibility" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 159-162 (1990)
[Publications] Y.Maruyama,G.Saito and S.Kagoshima Eds.: "Tunneling Spectroscopic Study of the Superconducting Gap of (BEDTーTTF)_2Cu(NCS)_2 Crystals" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 163-166 (1990)
[Publications] K.Oshima,G.Saito and S.Kagoshima Eds.: "Anomalous Trnasport Behavior in κー(BEDTーTTF)_2Cu(NCS)_2" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 276-279 (1990)
[Publications] T.Osada,G.Saito and S.Kagoshima Eds.: "HighーField Magnetotransport in the Organic Conductor (BEDTーTTF)_2KHg(SCN)_4" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 220-223 (1990)
[Publications] M.Oshima,G.Saito and S.Kagoshima Eds.: "Structural and Physical Properties of (BEDTーTTF)_2[KHg(SCN)_4]" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 257-261 (1990)
[Publications] M.Yoshimura,G.Saito and S.Kagoshima Eds.: "STM Study of (BEDTーTTF)_2Cu(NCS)_2 Surface" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 280-283 (1990)
[Publications] H.Mori: "Crystal and Electronic Structures of (BEDTーTTF)_2[MHg(SCN)_4](M=K and NH_4)" Bull.Chem.Soc.Jpn.63. 2183-2190 (1990)
[Publications] T.Osada: "HighーField Magnetotransport and FermiーSurface Topology in the Novel QuasiーTwoーDimensional Organic Conductor Bis(ethylenedithiolo)tetrathiafulvalenium Mercuric Potassium Thiocyanate,(BEDTーTTF)_2KHg(SCN)_4" Phys.Rev.B41. 5428-5431 (1990)
[Publications] T.Mori: "Thermoelectric Power of (BEDTーTTF)_2MHg(SCN)_4[M=K,Rb,and NH_4]" J.Phys.Soc.Jpn.59. 2624-2626 (1990)
[Publications] T.Osada: "Quantum Oscillation of Magnetoresistance in a New Organic Superconductor (BEDTーTTF)_2(NH_4)Hg(SCN)_4" Solid State Commun.75. 901-905 (1990)
[Publications] H.Mori: "Electrical Properties and Crystal Structures of Mercury(II)Thiocyanate Salts Based upon BEDTーTTF with Li^+,K^+,NH_4^+,Rb^+,and Cs^+" Solid State Commun.74. 1261-1264 (1990)
[Publications] Y.Nogami: "The Superstructure of the Organic Superconductor βー(BEDTーTTF)_2I_3 under Pressure" J.Phys.Soc.Jpn.59. 259-265 (1990)
[Publications] K.Kanoda: "MagneticーField Penetration Depth of an Organic Superconductor:Evidence for Anisotropic superconductivity of Gapless Nature" Phys.Rev.Lett.65. 1271-1274 (1990)
[Publications] M.Yudasaka: "Thin Film Formations of Charge Transfer Complexes with Metallic Properties by Vacuum Deposition Method" Mat.Res.Soc.Sym.Proc.173. 137-142 (1990)
[Publications] K.Imaeda: "Infrared Spectra of Tetrakis(alkylthio)tetrathiafulvalenes" Chem.Phys.Lett.173. 298-302 (1990)

1990 Fiscal Year Annual Research Report

高温有機超伝導体の開発

Principal Investigator

池本 勲 東京都立大学, 理学部, 教授 (00011601)

Research Products

[Publications] Y.Ishikawa: "Crystal Structure of the Organic Superconductor,(DMET)_2AuCl_2" Acta Crystallogr.C46. 1652-1655 (1989)

[Publications] M.ーH.Whangbo: "Structural and Electrical Properties of κーphase Organic Donor Salts:κー(DMET)_2AuBr_2 and κー(BEDTーTTF)_4Hg_3Cl_8" Mol.Cryst.Liq.Cryst.18. 1-15 (1990)

[Publications] I.Ikemoto: "Organic Superconductors,(DMET)_2X" Mol.Cryst.Liq.Cryst.181. 185-195 (1990)

[Publications] K.Saito: "Thermdynamic Study of the Incommensurate Phase Transitions in Crystalline Bis(4ーchlorophenyl)sulfone" Thermochim.Acta. 163. 241-248 (1990)

[Publications] K.Saito: "Tetramerized Structure of (DMET)_2ReO_4 and Its Apparent Matallic Behavior in Resistivity" Bull.Chem.Soc.Jpn.63. 1865-1870 (1990)

[Publications] K.Kikuchi,G.saito and S.kagoshima Eds.: "Physical Properties and Crystal Structures of DMET Superconductors and Conductors" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 230-233 (1990)

[Publications] K.Murata,G.Saito and S.Kagoshima Eds.: "Superconducutvity and Spin Density Waves in (DMET)_2Au(CN)_2" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 234-237 (1990)

[Publications] K.saito,G.Saito and S.Kagoshima Eds.: "Phase Transition of the Organic Metal (DMET)_2Au(CN)_2 at 180 K" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 238-241 (1990)

[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "Antiferromagnetic Transitions in (DMET)_2X and (DMPT)_2X" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 242-245 (1990)

[Publications] Y.Ishikawa: "Crystal Structure of the Organic Metal (DMET)_2BF_4 with Two Columns along Two Crystallographic Axes"" Bull.Chem.Soc.Jpn.64. 212-215 (1991)

[Publications] G.Saito: "Preparation and Properties of Organic Superconductor κー(BEDTーTTF)_2[Cu(NCS)_2] and Its Related Materials" Mat.Res.Soc.Symp.Proc.173. 95-106 (1990)

[Publications] G.Saito: "Organic Superconductor κー(BEDTーTTF)_2[Cu(NCS)_2] and Its Related Materials" Mol.Cryst.Liq.Cryst.181. 65-79 (1990)

[Publications] H.Mori,G.Saito and S.Kagoshima Eds.: "An Ambient Pressure Organic Superconductor κー(BEDTーTTFーh_8 and d_8)Cu(NCS)_2 with Tc Higher than 10 K" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 150-154 (1990)

[Publications] T.Nakamura: "Novel Structural and Electronic Properties of (MDTーTTF)_2Au(CN)_2" Solid State Commun.75. 583-586 (1990)

[Publications] T.Enoki,G.Saito and S.Kagoshima Eds.: "Electronic Properties of Charge Transfer Complexes of BEDTーTTF and Related Donors with Transition Metal Halides" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 294-297 (1990)

[Publications] Y.Iwasa: "Temperature Induced NeutralーIonic Transition in TetramethylbenzidineーTetracyanoquinodimethane" Phys.Rev.B42. 2374-2377 (1990)

[Publications] S.Koshihara: "Photoinduced Valence Instability in the Organic Molecular Compound TetrathiafulvaleneーpーChloranil(TTFーCA)" Phys.Rev.B42. 6853-6856 (1990)

[Publications] Y.Iwasa,G.saito and S.Kagoshima Eds.: "Dynamics of Charged Domain Walls in Semiconducting Charge Transfer Compounds" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 319-323 (1990)

[Publications] T.Takahashi,G.Saito and S.Kagoshima Eds.: " ^1H SpinーLattice Relaxation in the SDW State of (TMTSF)_2PF_6 Under Pressure" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 107-110 (1990)

[Publications] S.Kagoshima,G.Saito and S.Kagoshima Eds.: "2KーSuperconducting State in the Organic Superconductor βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 126-129 (1990)

[Publications] Y.Nogami,G.Saito and S.Kagoshima Eds.: "A Change of the Incommensurate Superstructure in the Organic Superconductor βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 130-133 (1990)

[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "Effect of Annealing on the Superconductivity of βー(BEDTーTTF)_2I_3" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 134-137 (1990)

[Publications] T.Takahashi,G.Saito and S.Kagoshima Eds.: "Nuclear SpinーLattice Relaxation in the Organic Superconductor (BEDTーTTF)_2Cu(NCS)_2:Measurements by the Field Cycling Technique" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 155-158 (1990)

[Publications] Y.Li,G.Saito and S.Kagoshima Eds.: "ChargeーCarrier Drift Mobilities and Phase Transition in Tetrakis(octylthio)tetrathiafulvalene,TTC_8ーTTF"" Bull.Chem.Soc.Jpn.63. 1857-1859 (1990)

[Publications] K.Kanoda,G.Saito and S.Kagoshima Eds.: "MagneticーField Penetration Depth of (BEDTーTTF)_2Cu(NCS)_2 Determinde by Complex Susceptibility" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 159-162 (1990)

[Publications] Y.Maruyama,G.Saito and S.Kagoshima Eds.: "Tunneling Spectroscopic Study of the Superconducting Gap of (BEDTーTTF)_2Cu(NCS)_2 Crystals" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 163-166 (1990)

[Publications] K.Oshima,G.Saito and S.Kagoshima Eds.: "Anomalous Trnasport Behavior in κー(BEDTーTTF)_2Cu(NCS)_2" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 276-279 (1990)

[Publications] T.Osada,G.Saito and S.Kagoshima Eds.: "HighーField Magnetotransport in the Organic Conductor (BEDTーTTF)_2KHg(SCN)_4" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 220-223 (1990)

[Publications] M.Oshima,G.Saito and S.Kagoshima Eds.: "Structural and Physical Properties of (BEDTーTTF)_2[KHg(SCN)_4]" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 257-261 (1990)

[Publications] M.Yoshimura,G.Saito and S.Kagoshima Eds.: "STM Study of (BEDTーTTF)_2Cu(NCS)_2 Surface" Springer Prodeedings in Physics 51.The Phisycs and Chemistry of Organic Superconductors. 280-283 (1990)

[Publications] H.Mori: "Crystal and Electronic Structures of (BEDTーTTF)_2[MHg(SCN)_4](M=K and NH_4)" Bull.Chem.Soc.Jpn.63. 2183-2190 (1990)

[Publications] T.Osada: "HighーField Magnetotransport and FermiーSurface Topology in the Novel QuasiーTwoーDimensional Organic Conductor Bis(ethylenedithiolo)tetrathiafulvalenium Mercuric Potassium Thiocyanate,(BEDTーTTF)_2KHg(SCN)_4" Phys.Rev.B41. 5428-5431 (1990)

[Publications] T.Mori: "Thermoelectric Power of (BEDTーTTF)_2MHg(SCN)_4[M=K,Rb,and NH_4]" J.Phys.Soc.Jpn.59. 2624-2626 (1990)

[Publications] T.Osada: "Quantum Oscillation of Magnetoresistance in a New Organic Superconductor (BEDTーTTF)_2(NH_4)Hg(SCN)_4" Solid State Commun.75. 901-905 (1990)

[Publications] H.Mori: "Electrical Properties and Crystal Structures of Mercury(II)Thiocyanate Salts Based upon BEDTーTTF with Li^+,K^+,NH_4^+,Rb^+,and Cs^+" Solid State Commun.74. 1261-1264 (1990)

[Publications] Y.Nogami: "The Superstructure of the Organic Superconductor βー(BEDTーTTF)_2I_3 under Pressure" J.Phys.Soc.Jpn.59. 259-265 (1990)

[Publications] K.Kanoda: "MagneticーField Penetration Depth of an Organic Superconductor:Evidence for Anisotropic superconductivity of Gapless Nature" Phys.Rev.Lett.65. 1271-1274 (1990)

[Publications] M.Yudasaka: "Thin Film Formations of Charge Transfer Complexes with Metallic Properties by Vacuum Deposition Method" Mat.Res.Soc.Sym.Proc.173. 137-142 (1990)

[Publications] K.Imaeda: "Infrared Spectra of Tetrakis(alkylthio)tetrathiafulvalenes" Chem.Phys.Lett.173. 298-302 (1990)

池本勲東京都立大学, 理学部, 教授 (00011601)