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.
|Journal||Journal De Physique. IV : JP|
|Publication status||Published - Nov 1 2002|
|Event||International Workshop on Electronic Crystals - ECRYS 2002 - Saint Flour, France|
Duration: Sept 2 2002 → Sept 7 2002
ASJC Scopus subject areas
- Physics and Astronomy(all)