Control of electronic states by bandwidth and band filling in organic conductors

H. Mori; T. Okano; M. Kamiya; M. Haemori; H. Suzuki; S. Tanaka; M. Tamura; Y. Nishio; K. Kajita; M. Kodani; K. Takimiya; T. Otsubo; H. Moriyama

doi:10.1016/S0379-6779(00)00805-5

Control of electronic states by bandwidth and band filling in organic conductors

H. Mori, T. Okano, M. Kamiya, M. Haemori, H. Suzuki, S. Tanaka, M. Tamura, Y. Nishio, K. Kajita, M. Kodani, K. Takimiya, T. Otsubo, H. Moriyama

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

In order to control the electronic states of organic conductors, two methods, (a) band filling and (b) bandwidth controls, have been applied. As for (a), it is the first time in organic conductors that the band filling in α-ET₃(GaCl₄)^-1_1-x (CoCl₄)^-2_x(TCE) (x = 0.38, 0.43, 0.46, 0.64, 1.00) is controlled systematically. For (b), the bandwidth control has been carried out by chemical and physical methods in λ-D₂GaCl₄ (D = ET, us-STF, BETS). By applying pressure, the system transfers from an antiferromagnetic insulator (λ-ET₂GaCl₄), a metallic state down to 1.3 K (λ-(us-STF)₂GaCl₄ under 18 kbar), to a superconductor (λ-BETS₂GaCl₄). It is clarified that the λ-type organic superconductor has been obtained by the bandwidth control of the antiferromagnetic insulator.

Original language	English
Pages (from-to)	979-980
Number of pages	2
Journal	Synthetic Metals
Volume	120
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(00)00805-5
Publication status	Published - 2001 Mar 15

Keywords

Electrocrystallization
Organic conductors based upon cation and/or anion radical salts
Transport measurements

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10.1016/S0379-6779(00)00805-5

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title = "Control of electronic states by bandwidth and band filling in organic conductors",

abstract = "In order to control the electronic states of organic conductors, two methods, (a) band filling and (b) bandwidth controls, have been applied. As for (a), it is the first time in organic conductors that the band filling in α-ET3(GaCl4)-11-x (CoCl4)-2x(TCE) (x = 0.38, 0.43, 0.46, 0.64, 1.00) is controlled systematically. For (b), the bandwidth control has been carried out by chemical and physical methods in λ-D2GaCl4 (D = ET, us-STF, BETS). By applying pressure, the system transfers from an antiferromagnetic insulator (λ-ET2GaCl4), a metallic state down to 1.3 K (λ-(us-STF)2GaCl4 under 18 kbar), to a superconductor (λ-BETS2GaCl4). It is clarified that the λ-type organic superconductor has been obtained by the bandwidth control of the antiferromagnetic insulator.",

keywords = "Electrocrystallization, Organic conductors based upon cation and/or anion radical salts, Transport measurements",

author = "H. Mori and T. Okano and M. Kamiya and M. Haemori and H. Suzuki and S. Tanaka and M. Tamura and Y. Nishio and K. Kajita and M. Kodani and K. Takimiya and T. Otsubo and H. Moriyama",

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doi = "10.1016/S0379-6779(00)00805-5",

language = "English",

volume = "120",

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TY - JOUR

T1 - Control of electronic states by bandwidth and band filling in organic conductors

AU - Mori, H.

AU - Okano, T.

AU - Kamiya, M.

AU - Haemori, M.

AU - Suzuki, H.

AU - Tanaka, S.

AU - Tamura, M.

AU - Nishio, Y.

AU - Kajita, K.

AU - Kodani, M.

AU - Takimiya, K.

AU - Otsubo, T.

AU - Moriyama, H.

PY - 2001/3/15

Y1 - 2001/3/15

N2 - In order to control the electronic states of organic conductors, two methods, (a) band filling and (b) bandwidth controls, have been applied. As for (a), it is the first time in organic conductors that the band filling in α-ET3(GaCl4)-11-x (CoCl4)-2x(TCE) (x = 0.38, 0.43, 0.46, 0.64, 1.00) is controlled systematically. For (b), the bandwidth control has been carried out by chemical and physical methods in λ-D2GaCl4 (D = ET, us-STF, BETS). By applying pressure, the system transfers from an antiferromagnetic insulator (λ-ET2GaCl4), a metallic state down to 1.3 K (λ-(us-STF)2GaCl4 under 18 kbar), to a superconductor (λ-BETS2GaCl4). It is clarified that the λ-type organic superconductor has been obtained by the bandwidth control of the antiferromagnetic insulator.

AB - In order to control the electronic states of organic conductors, two methods, (a) band filling and (b) bandwidth controls, have been applied. As for (a), it is the first time in organic conductors that the band filling in α-ET3(GaCl4)-11-x (CoCl4)-2x(TCE) (x = 0.38, 0.43, 0.46, 0.64, 1.00) is controlled systematically. For (b), the bandwidth control has been carried out by chemical and physical methods in λ-D2GaCl4 (D = ET, us-STF, BETS). By applying pressure, the system transfers from an antiferromagnetic insulator (λ-ET2GaCl4), a metallic state down to 1.3 K (λ-(us-STF)2GaCl4 under 18 kbar), to a superconductor (λ-BETS2GaCl4). It is clarified that the λ-type organic superconductor has been obtained by the bandwidth control of the antiferromagnetic insulator.

KW - Electrocrystallization

KW - Organic conductors based upon cation and/or anion radical salts

KW - Transport measurements

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JO - Synthetic Metals

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IS - 1-3

ER -

Control of electronic states by bandwidth and band filling in organic conductors

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