Effect of Temperature on Polaron Stability in a One-Dimensional Organic Lattice

被引：7
|
作者：
Liu Wen [1 ]
Li Yuan [1 ]
Qu Zhen [1 ]
Gao Kun [1 ]
Yin Sun [1 ]
Liu De-Sheng [1 ,2 ]
机构：
[1] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[2] Jining Univ, Dept Phys, Qufu 273155, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ELECTRON-TRANSFER REACTIONS; POLYACETYLENE; ABSORPTION; SCATTERING; POLYMERS;
D O I：
10.1088/0256-307X/26/3/037101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Effect of temperature on the polaron stability in a one-dimensional organic lattice is investigated within the Su-Schrieffer-Heeger model. The temperature effect is simulated by introducing random forces to the equation of the lattice motion. It is found that the localized polaron state becomes delocalized even at low temperatures. The time of polaron keeping localized depends on the magnitude of temperatures. By taking into account the thermal effect, we find that the dissociation field is weaker as compared with earlier works.
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页数：4
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