Conversion of excitons to spin-soliton pairs in quasi-one-dimensional halogen-bridged metal complexes

被引：40

作者：

Okamoto, H ^{[1
]}

Kaga, Y

Shimada, Y

Oka, Y

Iwasa, Y

Mitani, T

Yamashita, M

机构：

[1] Tohoku Univ, Sci Measurements Res Inst, Sendai, Miyagi 98077, Japan

[2] Japan Adv Inst Sci & Technol, Hokuriku, Ishikawa 92312, Japan

[3] Nagoya Univ, Grad Sch Human Informat, Nagoya, Aichi 46401, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.80.861

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have characterized the gap states from photoinduced absorption and photoinduced ESR studies on one-dimensional (1D) halogen-bridged metal complexes with degenerate and nondegenerate charge density wave (CDW) ground state. A comparison of excitation profiles of self-trapped exciton (STE) luminescence with those of the gap states demonstrates that excitons are relaxed to spin-soliton pairs. From an analysis of the temperature dependence of luminescence decay time, conversion from the STE to the solitonic state is found to occur through a finite potential barrier, the magnitude of which strongly depends on the degeneracy of the CDW.

引用

页码：861 / 864

页数：4

共 17 条

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