Crystal structure of charge ordered compound θ-(BEDT-TTF)2RbCo(SCN)4 at low temperatures

被引：27

作者：

Watanabe, M ^{[1
]}

Noda, Y

Yoshio, NI

Mori, H

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 07期

关键词：

metal-insulator transition; BEDT-TTF; organic conductor; charge ordering; crystal structure;

D O I：

10.1143/JPSJ.74.2011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The crystal structure of theta-(BEDT-TTF)(2)RbCo(SCN)(4) in its insulating state below T-MI (approximately 200 K) was investigated by X-ray diffraction experiments. The transfer integrals between the BEDT-TTF molecules were also calculated from the structural data, and the ionicities of BEDT-TTF molecules were estimated from the intramolecular bond length distribution. A large modulation of transfer integrals and charge disproportionation between BEDT-TTF molecules were found. The ratio of ionicities was 0 to +0.2 : +0.8 to +1.0. These results were compared with thoes of the analogous salt theta-(BEDT-TTF)(2)RbZn(SCN)(4).

引用

页码：2011 / 2016

页数：6

共 16 条

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