title: Checkerboard-type charge-ordered state of a pressure-induced superconductor, beta-(meso-DMBEDT-TTF)2PF6.
abstract: To investigate the insulating state of the pressure-induced superconductor, beta-(meso-DMBEDT-TTF)2PF6, we have carried out X-ray analysis at 11.5 K. In an asymmetric unit, there exist two crystallographically independent donor molecules, caused by charge separation. In the column structure, the arrangement of the charge-rich (r) and -poor (p) donor molecules is as rrpprrpp, which affords "checkerboard"-type charge ordering.
authors.affiliation: The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Kimura
authors.forename: Hideaki
authors.initials: H
authors.lastname: Suzuki
authors.forename: Tomoko
authors.initials: T
authors.lastname: Maejima
authors.forename: Hatsumi
authors.initials: H
authors.lastname: Mori
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Yamaura
authors.forename: Toru
authors.initials: T
authors.lastname: Kakiuchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Moriyama