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 journalArticle

28 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2011-2016
Number of pages6
Journaljournal of the physical society of japan
Volume74
Issue number7
DOIs
Publication statusPublished - 2005 Jul 1

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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