Magnetic and electronic phase diagram and superconductivity in the organic superconductors κ-(ET)2X

Takahiko Sasaki; N. Yoneyama; A. Matsuyama; N. Kobayashi

Magnetic and electronic phase diagram and superconductivity in the organic superconductors κ-(ET)₂X

Takahiko Sasaki, N. Yoneyama, A. Matsuyama, N. Kobayashi

Institute for Materials Research (IMR)

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

57 Citations (Scopus)

Abstract

The magnetic susceptibility of the organic superconductors κ-(h8 or d8-ET)₂X, X=Cu(NCS)₂ and Cu[N(CN)₂]Br has been studied. A metallic phase below T* =37-38 K for X=Cu[N(CN)₂] Br and 46-50 K for X=Cu(NCS)₂ has an anisotropic temperature dependence of the susceptibility and the charge transport. Partial charge-density-wave or charge fluctuation is expected to coexist with the metallic phase instead of the large antiferromagnetic fluctuation above T*. The phase diagram and the superconductivity of κ-(ET)₂X are discussed in connection with this phase.

Original language	English
Article number	060505
Pages (from-to)	605051-605054
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	6
Publication status	Published - 2002 Feb 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AU - Sasaki, Takahiko

AU - Yoneyama, N.

AU - Matsuyama, A.

AU - Kobayashi, N.

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N2 - The magnetic susceptibility of the organic superconductors κ-(h8 or d8-ET)2X, X=Cu(NCS)2 and Cu[N(CN)2]Br has been studied. A metallic phase below T* =37-38 K for X=Cu[N(CN)2] Br and 46-50 K for X=Cu(NCS)2 has an anisotropic temperature dependence of the susceptibility and the charge transport. Partial charge-density-wave or charge fluctuation is expected to coexist with the metallic phase instead of the large antiferromagnetic fluctuation above T*. The phase diagram and the superconductivity of κ-(ET)2X are discussed in connection with this phase.

AB - The magnetic susceptibility of the organic superconductors κ-(h8 or d8-ET)2X, X=Cu(NCS)2 and Cu[N(CN)2]Br has been studied. A metallic phase below T* =37-38 K for X=Cu[N(CN)2] Br and 46-50 K for X=Cu(NCS)2 has an anisotropic temperature dependence of the susceptibility and the charge transport. Partial charge-density-wave or charge fluctuation is expected to coexist with the metallic phase instead of the large antiferromagnetic fluctuation above T*. The phase diagram and the superconductivity of κ-(ET)2X are discussed in connection with this phase.

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