Electric-Field Control of Solitons in a Ferroelectric Organic Charge-Transfer Salt

被引：52

作者：

Kagawa, F. ^{[1
,2
,3
]}

Horiuchi, S. ^{[4
]}

Matsui, H. ^{[4
,5
]}

Kumai, R. ^{[4
]}

Onose, Y. ^{[1
,2
]}

Hasegawa, T. ^{[4
]}

Tokura, Y. ^{[1
,2
,4
,6
,7
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Japan Sci & Technol Agcy, Multiferro Project,ERATO, Tokyo 1138656, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[3] Univ Tokyo, QPEC, Tokyo 1138656, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058562, Japan

[5] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan

[6] ASI RIKEN, Cross Correlated Mat Res Grp CMRG, Wako, Saitama 3510198, Japan

[7] ASI RIKEN, CERG, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 22期

关键词：

IONIC PHASE-TRANSITION; TETRATHIAFULVALENE-PARA-CHLORANIL; DOMAIN-WALL DYNAMICS; DIELECTRIC RESPONSE; EXCITATIONS; TCNQ;

D O I：

10.1103/PhysRevLett.104.227602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The role of solitons in transport, dielectric, and magnetic properties has been revealed for the quasi-one-dimensional organic charge-transfer salt, TTF-QBrCl(3) [tetrathiafulvalene (TTF)-2-bromo-3,5,6trichloro- 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.

引用

页数：4

共 31 条

[1] Symmetry crossover and excitation thresholds at the neutral-ionic transition of the modified Hubbard model [J].