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Title: | Double path-integral method for obtaining the mobility of the one-dimensional charge transport in molecular chain |
Authors: | ผศ.ดร.สิขรินทร์ อยู่คง Watchara Liewrian Sikarin Yoo-Kong |
Issue Date: | 2015 |
Citation: | Yoo-Kong, S., Liewrian, W. Double path integral method for obtaining the mobility of the one-dimensional charge transport in molecular chain. Eur. Phys. J. E 38, 135 (2015). https://doi.org/10.1140/epje/i2015-15135-y |
Abstract: | We report on a theoretical investigation concerning the polaronic effect on the transport properties of a charge carrier in a one-dimensional molecular chain. Our technique is based on the Feynman’s path integral approach. Analytical expressions for the frequency-dependent mobility and effective mass of the carrier are obtained as functions of electron-phonon coupling. The result exhibits the crossover from a nearly free particle to a heavily trapped particle. We find that the mobility depends on temperature and decreases exponentially with increasing temperature at low temperature. It exhibits large polaronic-like behaviour in the case of weak electron-phonon coupling. These results agree with the phase transition (A.S. Mishchenko et al., Phys. Rev. Lett. 114, 146401 (2015)) of transport phenomena related to polaron motion in the molecular chain. |
URI: | https://modps76.lib.kmutt.ac.th/xmlui//handle/123456789/1705 |
Appears in Collections: | Research |
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Double path-integral method for obtaining the mobility of the one-dimensional charge transport in molecular chain.pdf | 871.18 kB | Adobe PDF | View/Open |
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