STRUCTURES AND PROPERTIES OF NEW MOLECULAR CONDUCTORS BASED ON PD(DMISE)(2) (DMISE=SELENOXO-1,3-D-DITHIOLE-4,5-DITHIOLATE)

被引：16

作者：

KATO, R

LIU, YL

SAWA, H

AONUMA, S

ICHIKAWA, A

TAKAHASHI, H

MORI, N

机构：

[1] The Institute for Solid State Physics, The University of Tokyo, Minato-ku, Tokyo, 106

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 94卷 / 12期

关键词：

ORGANIC CRYSTALS; CRYSTAL STRUCTURE AND SYMMETRY; ELECTRONIC BAND STRUCTURE; ELECTRONIC TRANSPORT;

D O I：

10.1016/0038-1098(95)00195-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Four new anion radical salts D[Pd(dmise)(2)](2) (D=(CH3)(4)N, (CH3)(4)P, (CH3)(4)As (CH3)(4)Sb) have been prepared. All of them are isostructural with the superconducting all-sulfur analog beta-(CH3)(4)N[Pd(dmit)(2)](2). In the unit cell, strongly dimerized Pd(dmise)(2) molecules stack to form 1-dimensional columns along the a+b and a-b directions. Electrical resistivity of each salt shows very small temperature dependence down to ca. 150 K (rho(R.T.)=ca. 10(-2) Omega cm), below which a rapid increase in the resistivity is observed. In the (CH3)(4)P salt, an application of pressure leads to an appearance of a metallic region. A superconducting transition, however, is not observed up to 12.0 kbar. The electronic structure of these salts is examined by means of a tight-binding band calculation.

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页码：973 / 977

页数：5

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