Superconductivity in new organic conductor κ-(BEDSe-TTF)2CuN(CN)2Br

被引：28

作者：

Sakata, J

Sato, H

Miyazaki, A

Enoki, T ^{[1
]}

Okano, Y

Kato, R

机构：

[1] Tokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan

[2] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1060032, Japan

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 108卷 / 06期

关键词：

organic crystals; superconductors; electronic band structure; electronic transport; phase transitions;

D O I：

10.1016/S0038-1098(98)00368-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Superconductivity is discovered in new type of two-dimensional organic metal kappa-(BEDSe-TTF)(2)CuN(CN)(2)Br consisting of BEDT-TTF donor analogue having selenium-substituted six-member outer rings. This salt is isostructural to the corresponding BEDT-TTF salt and shows metallic behavior accompanied with a spin-density-wave transition at TMI-25K. The application of pressure up to 0.15 GPa generates superconducting state at T-c = 7.5 K, which is lower than T-c of the BEDT-TTF salt (T-c = 11.6 K). The lowering of T-c and the modification in the electronic structure are explained in terms of the important contribution of selenium electrons and the concomitant enhancement in donor dimerization. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：377 / 381

页数：5

共 11 条

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