| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Effect of Temperature on Polaron Stability in a One-Dimensional Organic Lattice |
| LIU Wen1, LI Yuan1, QU Zhen1,GAO Kun1, YIN Sun1, LIU De-Sheng1,2 |
| 1State Key Laboratory of Crystal Materials, School of Physics, Shandong University, Jinan 2501002Department of Physics, Jining University, Qufu 273155 |
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| Cite this article: |
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LIU Wen, LI Yuan, QU Zhen et al 2009 Chin. Phys. Lett. 26 037101 |
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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.
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| Keywords:
71.38.-k
11.10.Wx
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Received: 27 October 2008
Published: 19 February 2009
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| PACS: |
71.38.-k
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(Polarons and electron-phonon interactions)
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11.10.Wx
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(Finite-temperature field theory)
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