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.
Abstract：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.
LIU Wen;LI Yuan;QU Zhen;GAO Kun;YIN Sun;LIU De-Sheng;. Effect of Temperature on Polaron Stability in a One-Dimensional Organic Lattice[J]. 中国物理快报, 2009, 26(3): 37101-037101.
LIU Wen, LI Yuan, QU Zhen, GAO Kun, YIN Sun, LIU De-Sheng,. Effect of Temperature on Polaron Stability in a One-Dimensional Organic Lattice. Chin. Phys. Lett., 2009, 26(3): 37101-037101.
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2009, Vol. 26 
