2000 Fiscal Year Annual Research Report

π-dおよびπ電子系分子導体の磁性・電気伝導性の研究

Research Project

Project/Area Number	11224212
Research Institution	Okazaki National Research Institutes
Principal Investigator	薬師久弥岡崎国立共同研究機構, 分子科学研究所, 教授 (20011695)
Co-Investigator(Kenkyū-buntansha)	山本薫岡崎国立共同研究機構, 分子科学研究所, 助手 (90321695)
Keywords	フタロシアニン / 一次元導体 / π-d電子系 / 交換相互作用 / 希薄合金 / 反射率スペクトル / 偏光ラマン散乱 / 金属絶縁体転移
Research Abstract	1.フタロシアニン導体を用いた希薄合金Co_<001>Ni_<0.99>Pc(AsF_6)_<0.5>はCo上の局在スピンとPc上の遍歴電子が共存する電子系である。この希薄合金のESRに出現する超微細構造を解析する事により、Coに局在するスピンは3d_z^2軌道を占めている事を明らかにした。また、ESRの線幅とg値の温度依存性をモデル計算と比較する事によって、この局在スピンと遍歴性π電子との交換相互作用を\|J_<πd>\|=0.013 eV、フェルミ順位の1スピンあたりの状態密度をD_F=3.5 eV^<-1>と実験的に見積もる事に威功した。これらのバラメータをバンド幅と組み合わせて、この物質の近藤温度を見積もるとT_K=2×10_<-5> Kと非常に低い温度である事を明らかにした。またCoPc(AsF_6)_<0.5>とNiPc(AsF_6)_<0.5>の偏光反射スペクトルを比較した。その結果、CoPc(AsF_6)_<0.5>のフェルミ準位付近には、かなり広いバンド幅のCo3d_z^2バンドが存在する事を明らかにした。また、ラマン散乱の共鳴効果より、弱い電子遷移を発見し、3d_x^2-_y^2バンドの位置を推定した。 2.溶媒分子を含み狭いバンド幅を持つ分子導体(BEDT-ATD)_2X(solvent)(X=PF_6,AsF_6,BF_4;solvent=THF,DHF,DO)の反射率の測定と低温構造の決定を行なった。この物質の光学伝導度スペクトルから伝導電子はoff-siteクーロンエネルギーの影響を受けており、電子密度の強い揺らぎがあることを明らかにした。また絶縁相では4k_F(2量化)の構造変化を起こす事を明らかにした。配向乱れを起こしていた溶媒分子が強誘電的に配向する物質があるが、これらの分子はガラス的に徐々に配向して行く事も明らかにした。

Research Products

(26 results)

All Other

All Publications (26 results)

[Publications] Kyuya Yakushi,Mikio,Uruichi,and Yoshiro Yamashita: "Phase Transition in Narrow-band Organic Metals (BEDT-ATD)_2X (solvent)(X=PF_6,AsF_6,BF_4;solvent=THF,DHF,DO)"Synthetic Metals. 109. 33-37 (2000)
[Publications] C.Nakano,K.Yakushi,M.Kohama,K.Ueda and T.Sugimoto: "Estimation of the Site-Energy difference In the crystal of Et_4N (DMTCNQ)_2"Solid State Commun. 113. 677-682 (2000)
[Publications] K.Yakushi,J.Ulanski,H.Yamochi,and G.Saito: "Observation of Plasmons by Normal-incidence Reflectivity in Two-dimensional Organic Metals"Phys.Rev.B. 61. 9891-9894 (2000)
[Publications] X.Chen,C.Yang,J.Qin,K.Yakushi,Y.Nakazawa,K.Ichimira: "The intercalation reaction of 1,10-phenanthroline with layered compound FePS_3"J.Solid State Chem.. 150. 258-265 (2000)
[Publications] Olga Drozdova,Hideki,Yamochi,Kyuya Yakushi,Mikio Uruichi,Sachio Horiuchi,and Gunzi,Saito: "Determination of the Charge on BEDO-TTF in its Complexes by Raman Spectroscopy"J.Am.Chew.Soc.. 112. 4436-4442 (2000)
[Publications] K.Takeda,I.Shirotani,and K.Yakushi: "Pressure-induced insulator-to-metal-to-insulator transitions in one-dimensional bis (dimethylglyoximato) platinum (II). Pt (dmg)_2"Chemstry of Materials. 12. 912-916 (2000)
[Publications] C.Yang,X.Chen,J.Qin,K.Yakushi,Y.Nakazawa,and K.Ichimura: "Synthesis, Characterization, and Magnetic Properties of Intercalation Compound of 1,10-Phenanthroline with Layered MnPS_3"Materials Science and Engineering. A286. 183-187 (2000)
[Publications] D.Zhang,J.Qin,K.Yakushi,Y.Nakazawa,and K.Ichimura: "Preparation of a new nanocomposite of conducting polyaniline into layered MnP_3"Materials Science and Engineering. A286. 183-187 (2000)
[Publications] M.K.Bhide,M.D.Sastry,J.Qin,C.Yang,K.Yakushi,Y.Nakazawa,K.Ichimura,A.K.Sra,J.V.Yakhmi: "Electron magnetic resonance studies of the intercalation ferromagnet 2,2'-bipyridine-MnPS_3 above and below Curie temperature"Mol.Cryst.Liq.Cryst.. 34. 295-300 (2000)
[Publications] M.K.Bhide,R.M.Kadam,M.D.Sastry,J.Qin,C.Yang,K.Yokushi,Y.Nakazawa,K.Ichimura,A.K.Sra AK.J.V.Yakhmi: "Electron paramagnetic resonance study of magnetic ordering in MnPS_3,Mn_<0.79>PS_3 (4,4'-bipy)_<(0.42)> and Mn_<0.84>PS_3 (1,10-Phen)_<(0.64)> compounds"Mol.Cryst.Liq.Cryst.. 341. 923-928 (2000)
[Publications] Leokodiya V. Zorina, Salval S. Khasanov, Rimma P. Shibaeva, Marc Gener, Roger Rousseau, Enric Canadell, Lyudnila A. Kushch, Edward. B. Yagubskii, Olga O. Drozdova and Kyuya Yakushi.: "A new stable organic metal based on the BEDO-TTF donor and the doubly charged nitroprusside anion, (BEDO-TTF)_4 [Fe(CN)_5N0]"J.Mater.Chem.. 10(9). 2017-2023 (2000)
[Publications] K.Takeda,I.Shirotani,C.Sekine,and K.Yakushi: "Metal to insulator transition of one-dimensional bis (1,2-benzoquinonedioximato) platinum (II), Pt(bqd)_<>, at low temperatures and high pressures"J.Phys.: Condens.Matter. 12. L483-L488 (2000)
[Publications] M.Uruichi,Y.Yamashita,and K.Yakushi: "Optical Properties and Metal-Insulator in (BEDT-ATD)_2X (solvent)(X=PF_6,AsF_6,BF_4 ; solvent=THF,DHF,DO)[BEDT-ATD=4,1]-bis (4'5'-ethylenedithio-1'3'-dithiole-2'-ylidene)-4,11-dihydroanthra [2,3-c][1,2,5] thiadiazole]"J.Mater.Chem.. 10. 2716-2722 (2000)
[Publications] K.Yakushi: "Reflection spectroscopic study of organic conductors"Bull.Chem.Soc.Jpn.. 73. 2643-2662 (2000)
[Publications] J.Ouyang,K.Yakushi,Y.Misaki,and K.Tanaka: "Raman spectroscopic evidence for the charge disproportionation in a quasi-two-dimensional organic conductor θ-(BDT-TTP)_2Cu (NCS)_2"Phys.Rev.B. 63. 54301-54306 (2001)
[Publications] K.Yakushi,M.Simonyan,and Y.Ding: "Spectroscopic Studies of Solid Phthalocyanines and their Charge-transfer Salts"J.Porphyrins Phthalocyanines. 5. 13-24 (2001)
[Publications] M.Simonyan,Y.Yonehara,Y.Ding,and K.Yakushi: "Hyperfine structure and exchange coupling between local and itinerant magnetic moments in quasi-one-dimensional organic metal Co_<0.01>Ni_<0.99>Pc (AsF_6)_<0.5>"Phys.Rev.B. 63. 113103-113106 (2001)
[Publications] I.Shirotani,J.Hayashi,K.Yakushi,K.Takeda,T.Yokota,K.Shimizu.K.Amaya,A.Nakayama,and K.Aoki: "Pressure-induced insulator-to-metal transition and superconductivity in iodanil, C_6I_4O_2"Physica B. (印刷中).
[Publications] M.J.Konstantinovic,J.Dong,M.E.Ziaei,B.P.Clayman,J.C.Irwin.K.Yakushi,M.Isobe,and Y.Ueda: "Charge ordering and optical transitions of Li_2VO_5 and NaV_2O_5"Phys.Rev B. 63. 121102-121105 (2001)
[Publications] K.Yakushi,J.Ouyang,M.Simonyan,Y.Misaki,K.Tanaka: "Charge order in θ-(BDT-TTP)_2Cu(NCS)_2"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] Y.Ding,M.Simonyan,Y.Yonehara,M.Uruichi,K.Yakushi: "Formation of mixed crystal system Co_xNi_<1-x>Pc (AsF_6)_<0.5>"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] K.Yamamoto,K.Yakushi,M.Inokchi,M.Kinoshita,G.Saito: "Charge disproportionation and its ordering pattern in θ and α types of BEDT-TTF salts studied by Raman and infrared spectroscopy"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] T.Nakamura,K.Takahashi,T.Ise,T.Shirahata,M.Uruichi,K.Yakushi,T.Mori: "Magnetic properties of organic spin-ladder systems, (BDTFP)_2X(PhCl)_<0.5>"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] O.Drozdova,H.Yamochi,K.Yakushi,M.Uruichi,G.Saito: "Charge transfer degree of BO complexes"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] M.Tokumoto,T.Mizutani,T.Kinoshitu,J.S.Brooks,Y.Uwatoko,O.Drozdova,K.Yakushi,I.Tumuru,H.Kobuyashi,T.Mungetsu,J.Yumadu,K.Ishida: "Effect of uniaxial pressure in organic superconductor κ-(BEDT-TTF)_2Cu(NCS)_2"Mol.Cryst.Liq.Cryst.. (印刷中).
[Publications] Y.Ding,M.Simonyan,Y.Yonehara,M.Uruichi,and K.Yakushi: "Preparation and characterization of organic alloy Co_xNi_<1-x>Pc(AsF_6)_<0.5> (0【less than or equal】x【less than or equal】1)"J.Mater.Chem.. 11号. 1469-1475 (2001)

2000 Fiscal Year Annual Research Report

π-dおよびπ電子系分子導体の磁性・電気伝導性の研究

Principal Investigator

薬師 久弥 岡崎国立共同研究機構, 分子科学研究所, 教授 (20011695)

Research Products

[Publications] Kyuya Yakushi,Mikio,Uruichi,and Yoshiro Yamashita: "Phase Transition in Narrow-band Organic Metals (BEDT-ATD)_2X (solvent)(X=PF_6,AsF_6,BF_4;solvent=THF,DHF,DO)"Synthetic Metals. 109. 33-37 (2000)

[Publications] C.Nakano,K.Yakushi,M.Kohama,K.Ueda and T.Sugimoto: "Estimation of the Site-Energy difference In the crystal of Et_4N (DMTCNQ)_2"Solid State Commun. 113. 677-682 (2000)

[Publications] K.Yakushi,J.Ulanski,H.Yamochi,and G.Saito: "Observation of Plasmons by Normal-incidence Reflectivity in Two-dimensional Organic Metals"Phys.Rev.B. 61. 9891-9894 (2000)

[Publications] X.Chen,C.Yang,J.Qin,K.Yakushi,Y.Nakazawa,K.Ichimira: "The intercalation reaction of 1,10-phenanthroline with layered compound FePS_3"J.Solid State Chem.. 150. 258-265 (2000)

[Publications] Olga Drozdova,Hideki,Yamochi,Kyuya Yakushi,Mikio Uruichi,Sachio Horiuchi,and Gunzi,Saito: "Determination of the Charge on BEDO-TTF in its Complexes by Raman Spectroscopy"J.Am.Chew.Soc.. 112. 4436-4442 (2000)

[Publications] K.Takeda,I.Shirotani,and K.Yakushi: "Pressure-induced insulator-to-metal-to-insulator transitions in one-dimensional bis (dimethylglyoximato) platinum (II). Pt (dmg)_2"Chemstry of Materials. 12. 912-916 (2000)

[Publications] C.Yang,X.Chen,J.Qin,K.Yakushi,Y.Nakazawa,and K.Ichimura: "Synthesis, Characterization, and Magnetic Properties of Intercalation Compound of 1,10-Phenanthroline with Layered MnPS_3"Materials Science and Engineering. A286. 183-187 (2000)

[Publications] D.Zhang,J.Qin,K.Yakushi,Y.Nakazawa,and K.Ichimura: "Preparation of a new nanocomposite of conducting polyaniline into layered MnP_3"Materials Science and Engineering. A286. 183-187 (2000)

[Publications] M.K.Bhide,M.D.Sastry,J.Qin,C.Yang,K.Yakushi,Y.Nakazawa,K.Ichimura,A.K.Sra,J.V.Yakhmi: "Electron magnetic resonance studies of the intercalation ferromagnet 2,2'-bipyridine-MnPS_3 above and below Curie temperature"Mol.Cryst.Liq.Cryst.. 34. 295-300 (2000)

[Publications] K.Takeda,I.Shirotani,C.Sekine,and K.Yakushi: "Metal to insulator transition of one-dimensional bis (1,2-benzoquinonedioximato) platinum (II), Pt(bqd)_<>, at low temperatures and high pressures"J.Phys.: Condens.Matter. 12. L483-L488 (2000)

[Publications] K.Yakushi: "Reflection spectroscopic study of organic conductors"Bull.Chem.Soc.Jpn.. 73. 2643-2662 (2000)

[Publications] J.Ouyang,K.Yakushi,Y.Misaki,and K.Tanaka: "Raman spectroscopic evidence for the charge disproportionation in a quasi-two-dimensional organic conductor θ-(BDT-TTP)_2Cu (NCS)_2"Phys.Rev.B. 63. 54301-54306 (2001)

[Publications] K.Yakushi,M.Simonyan,and Y.Ding: "Spectroscopic Studies of Solid Phthalocyanines and their Charge-transfer Salts"J.Porphyrins Phthalocyanines. 5. 13-24 (2001)

[Publications] M.Simonyan,Y.Yonehara,Y.Ding,and K.Yakushi: "Hyperfine structure and exchange coupling between local and itinerant magnetic moments in quasi-one-dimensional organic metal Co_<0.01>Ni_<0.99>Pc (AsF_6)_<0.5>"Phys.Rev.B. 63. 113103-113106 (2001)

[Publications] I.Shirotani,J.Hayashi,K.Yakushi,K.Takeda,T.Yokota,K.Shimizu.K.Amaya,A.Nakayama,and K.Aoki: "Pressure-induced insulator-to-metal transition and superconductivity in iodanil, C_6I_4O_2"Physica B. (印刷中).

[Publications] M.J.Konstantinovic,J.Dong,M.E.Ziaei,B.P.Clayman,J.C.Irwin.K.Yakushi,M.Isobe,and Y.Ueda: "Charge ordering and optical transitions of Li_2VO_5 and NaV_2O_5"Phys.Rev B. 63. 121102-121105 (2001)

[Publications] K.Yakushi,J.Ouyang,M.Simonyan,Y.Misaki,K.Tanaka: "Charge order in θ-(BDT-TTP)_2Cu(NCS)_2"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] Y.Ding,M.Simonyan,Y.Yonehara,M.Uruichi,K.Yakushi: "Formation of mixed crystal system Co_xNi_<1-x>Pc (AsF_6)_<0.5>"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] K.Yamamoto,K.Yakushi,M.Inokchi,M.Kinoshita,G.Saito: "Charge disproportionation and its ordering pattern in θ and α types of BEDT-TTF salts studied by Raman and infrared spectroscopy"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] T.Nakamura,K.Takahashi,T.Ise,T.Shirahata,M.Uruichi,K.Yakushi,T.Mori: "Magnetic properties of organic spin-ladder systems, (BDTFP)_2X(PhCl)_<0.5>"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] O.Drozdova,H.Yamochi,K.Yakushi,M.Uruichi,G.Saito: "Charge transfer degree of BO complexes"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] M.Tokumoto,T.Mizutani,T.Kinoshitu,J.S.Brooks,Y.Uwatoko,O.Drozdova,K.Yakushi,I.Tumuru,H.Kobuyashi,T.Mungetsu,J.Yumadu,K.Ishida: "Effect of uniaxial pressure in organic superconductor κ-(BEDT-TTF)_2Cu(NCS)_2"Mol.Cryst.Liq.Cryst.. (印刷中).

[Publications] Y.Ding,M.Simonyan,Y.Yonehara,M.Uruichi,and K.Yakushi: "Preparation and characterization of organic alloy Co_xNi_<1-x>Pc(AsF_6)_<0.5> (0【less than or equal】x【less than or equal】1)"J.Mater.Chem.. 11号. 1469-1475 (2001)

薬師久弥岡崎国立共同研究機構, 分子科学研究所, 教授 (20011695)