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Self-trapping of polarons with off-diagonal coupling.

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Self-trapping of polarons with off-diagonal coupling.

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Title: Self-trapping of polarons with off-diagonal coupling.
Author: Sun, Jin.; Zhao, Yang.; Liang, Wanzhen.
Copyright year: 2009
Abstract: A variational polaron wave function pioneered by Toyozawa is utilized to elucidate exciton-phonon correlations in a generalized Holstein Hamiltonian in the simultaneous presence of diagonal and off-diagonal exciton-phonon couplings. We show that a simple analysis of quantum entanglement between excitonic and phononic degrees of freedom allows one to effectively characterize both the small- and large-polaron regimes as well as the crossover in between.
Subject: DRNTU::Science::Physics::Atomic physics::Solid state physics.
Type: Journal Article
Series/ Journal Title: Physical review B
School: School of Materials Science and Engineering
Rights: © 2009 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at: [Doi: http://dx.doi.org/10.1103/PhysRevB.79.155112]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Version: Published version

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