Neutral-ionic transition in TTF(2)IA at high pressure

被引：4

作者：

Tasaki, K ^{[1
]}

Matsuzaki, S ^{[1
]}

Yartsev, VM ^{[1
]}

机构：

[1] INST VENEZOLANO INVEST CIENT,CTR FIS,CARACAS 1020A,VENEZUELA

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 06期

基金：

日本学术振兴会;

关键词：

organic crystals; optical properties; strain; high pressure;

D O I：

10.1016/S0038-1098(97)00181-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Pressure dependence of the absorbance and electrical conductivity of bis-tetrathiafulvalene-iodanil (TTF(2)IA) is reported. Manifestations of the neutral-ionic transition at 3.1 GPa are obtained in the d.c. conductivity, electronic excitation spectrum, charge-transfer and vibrational bands supporting the idea of an asymmetric charge distribution between the TTF moieties in the TTF-IA-TTF trimer units in the quasi-ionic state. The way of evaluating the ionicity of TTF molecules above the transition pressure is proposed. (C) 1997 Elsevier Science Ltd.

引用

页码：365 / 369

页数：5

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