Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/95835
Title: Off-diagonal carrier-phonon coupling and polaron transport
Authors: Ye, Jun
Chen, Dongmeng
Zhao, Yang
Issue Date: 2012
Source: Ye, J., Chen, D., & Zhao, Y. (2012). Off-diagonal carrier-phonon coupling and polaron transport. Journal of Physics: Conference Series, 338, 012018.
Series/Report no.: Journal of physics : conference series
Abstract: A method extending the Munn-Silbey approach has been applied to obtain the temperature dependence of transport properties of a generalized Holstein model incorporating simultaneous diagonal and off-diagonal carrier-phonon coupling. The Hamiltonian is partially diagonalized by a canonical transformation, and optimal transformation coefficients are determined in a self-consistent manner. Effects of off-diagonal coupling on the optimal transformation coefficients and diffusion coefficients have been discussed in details. The off-diagonal coupling has been revealed as a localization factor as well as a transport mechanism. Moreover, momentum-space variation of the transformation coefficients are found to be responsible for enhanced transport due to off-diagonal coupling.
URI: https://hdl.handle.net/10356/95835
http://hdl.handle.net/10220/11360
ISSN: 1742-6596
DOI: 10.1088/1742-6596/338/1/012018
Rights: © 2012 IOP Publishing Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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