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

Masashi Watanabe; Yukio Noda; Yoshio Nogami; Hatsumi Mori

doi:10.1143/JPSJ.74.2011

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

Masashi Watanabe, Yukio Noda, Yoshio Nogami, Hatsumi Mori

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The crystal structure of θ-(BEDT-TTF)₂RbCo(SCN) ₄ in its insulating state below T_MI (approximately 200 K) was investigated by X-ray di.raction 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 +2 : +0.8 to +1.0. These results were compared with thoes of the analogous salt θ-(BEDTTTF)₂RbZn(SCN)₄.

Original language	English
Pages (from-to)	2011-2016
Number of pages	6
Journal	journal of the physical society of japan
Volume	74
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.74.2011
Publication status	Published - Jul 2005

Keywords

BEDT-TTF
Charge ordering
Crystal structure
Metal-insulator transition
Organic conductor

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.74.2011

Cite this

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

abstract = "The crystal structure of θ-(BEDT-TTF)2RbCo(SCN) 4 in its insulating state below TMI (approximately 200 K) was investigated by X-ray di.raction 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 +2 : +0.8 to +1.0. These results were compared with thoes of the analogous salt θ-(BEDTTTF)2RbZn(SCN)4.",

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T1 - Crystal structure of charge ordered compound θ-(BEDT-TTF) 2RbCo(SCN)4 at low temperatures

AU - Watanabe, Masashi

AU - Noda, Yukio

AU - Nogami, Yoshio

AU - Mori, Hatsumi

PY - 2005/7

Y1 - 2005/7

N2 - The crystal structure of θ-(BEDT-TTF)2RbCo(SCN) 4 in its insulating state below TMI (approximately 200 K) was investigated by X-ray di.raction 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 +2 : +0.8 to +1.0. These results were compared with thoes of the analogous salt θ-(BEDTTTF)2RbZn(SCN)4.

AB - The crystal structure of θ-(BEDT-TTF)2RbCo(SCN) 4 in its insulating state below TMI (approximately 200 K) was investigated by X-ray di.raction 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 +2 : +0.8 to +1.0. These results were compared with thoes of the analogous salt θ-(BEDTTTF)2RbZn(SCN)4.

KW - BEDT-TTF

KW - Charge ordering

KW - Crystal structure

KW - Metal-insulator transition

KW - Organic conductor

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