Unusual 2kF CDW state with enhanced charge ordering in β-(BEDT-TTF)2AsF6 and PF6

Y. Nogami, T. Mori

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

X-ray superstructure analyses of the 2kf CDW states for two-dimensional organic compounds β-(BEDT-FTF)2PF6 and AsF6 were presented Molecular ionicity of BEDT-TTF was evaluated with both intramolecular bond lengths and molecular shape. Strong bending of quasi-neutral BEDT-TTF molecules coupled with the enhanced amplitude of charge modulation was observed Conformational ordering of the terminal ethylenes of BEDT-TTF molecules and dimerization between quasi-ionic BEDT-TTF molecules were also observed These characteristic indicates this CDW is not Peierls-Frohlich type but coupled with the internal degree of the molecular shape and possibly the intersite Coulomb repulsion.

Original languageEnglish
Pages (from-to)Pr9/233-Pr9/234
JournalJournal De Physique. IV : JP
Volume12
Issue number9
Publication statusPublished - Nov 1 2002
EventInternational Workshop on Electronic Crystals - ECRYS 2002 - Saint Flour, France
Duration: Sep 2 2002Sep 7 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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