Metallic, insulating and superconducting states in κ-ET2X systems, where ET is the BEDT-TTF (bis(ethylenedithio)tetrathiafulvalene) molecule

被引：0

作者：

Ivanov, VA ^{[1
]}

Ugolkova, EA ^{[1
]}

Zhuravlev, MY ^{[1
]}

机构：

[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 117907, Russia

来源：

ELECTRONIC PROPERTIES OF NOVEL MATERIALS - PROGRESS IN MOLECULAR NANOSTRUCTURES: XII INTERNATIONAL WINTERSCHOOL | 1998年 / 442卷

关键词：

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An electronic structure and normal and superconducting properties are reviewed for layered organic materials on the basis of bis(ethylenedithio)tetrathiafulvalene molecule (BEDT-TTF, hereafter ET) with essential intraET electron and cross-dimer kappa-packing in ET-plane. The metall-insulator phase transition is derived for realistic model of kappa-ET2X salts. Based on the Fermi-surface topology and electron correlations the d-symmetry of superconducting order parameter is obtained with interpIay between its nodes on the Fermi surface and superconducting phase characteristics. The results are in agreement with measured nonactivated temperature dependencies of NMR-relaxation rate of central carbon C-13 spins in ET and superconducting specific heat.

引用

页码：451 / 455

页数：5

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