title: Electric-field control of solitons in a ferroelectric organic charge-transfer salt.
abstract: The role of solitons in transport, dielectric, and magnetic properties has been revealed for the quasi-one-dimensional organic charge-transfer salt, TTF-QBrCl3 [tetrathiafulvalene (TTF)-2-bromo-3,5,6-trichloro-p-benzoquinone (QBrCl3)]. The material was found to be ferroelectric and hence the solitons should be located at the boundary of the segments with opposite electric polarization. This feature enabled the electric-field control of soliton density and hence the clear-cut detection of soliton contributions. The gigantic dielectric response in the ferroelectric phase is ascribed to the dynamical bound and creeping motions of spinless solitons.
authors.affiliation: Multiferroics Project, ERATO, Japan Science and Technology Agency, c/o Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: F
authors.initials: F
authors.lastname: Kagawa
authors.forename: S
authors.initials: S
authors.lastname: Horiuchi
authors.forename: H
authors.initials: H
authors.lastname: Matsui
authors.forename: R
authors.initials: R
authors.lastname: Kumai
authors.forename: Y
authors.initials: Y
authors.lastname: Onose
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura