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|Title:||Double path-integral method for obtaining the mobility of the one-dimensional charge transport in molecular chain|
|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.|
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