SUPERLATTICE STRUCTURAL TRANSITION IN THE ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)(2)CU[N(CN)(2)]BR

被引：51

作者：

NOGAMI, Y

POUGET, JP

ITO, H

ISHIGURO, T

SAITO, G

机构：

[1] UNIV PARIS 11,PHYS SOLIDES LAB,CNRS,URA 02,F-91450 ORSAY,FRANCE

[2] KYOTO UNIV,DEPT PHYS,KYOTO,KYOTO 60601,JAPAN

[3] KYOTO UNIV,DEPT CHEM,KYOTO,KYOTO 60601,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 89卷 / 02期

关键词：

D O I：

10.1016/0038-1098(94)90387-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By the X-ray ''monochromatic'' Laue photographic method, we observe the formation below 200 K of superlattice reflections in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br which exhibits the highest superconducting critical temperature at ambient pressure (T-c similar to 11.6 K) among the organic superconductors. This displacive structural transition doubles the lattice parameter along c. We discuss the driving force of this instability and the consequences of this structural transition on the electronic and lattice properties of this salt.

引用

页码：113 / 116

页数：4

共 19 条

[1]

BURAVOV LI, 1992, J PHYS I, V2, P1257, DOI 10.1051/jp1:1992207

[2] STRAIN INDEX, LATTICE SOFTNESS AND SUPERCONDUCTIVITY OF ORGANIC DONOR-MOLECULE SALTS - CRYSTAL AND ELECTRONIC-STRUCTURES OF 3 ISOSTRUCTURAL SALTS KAPPA-(BEDT-TTF)2CU[N(CN)2]CL, KAPPA-(BEDT-TTF)2CU[N(CN)2]BR, KAPPA-(BEDT-TTF)2CU[N(CN)2]I [J].