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arXiv 1408.3697cond-mat.str-el
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具有无序电子-声子相互作用的极化子

Polaron with disordered electron-phonon interaction

Bakhrom Yavidov

摘要:

在强耦合极限下,在推广的Holstein模型框架下,考虑了一维晶格中的单电子。提出了无序密度位移型电子-声子相互作用。计算了无序电子-声子相互作用形成的小极化子的基本参数。结果表明,无序的电子-声子相互作用实质上影响极化子的所有性质。极化子效应的增强或减弱取决于无序的电子-声子相互作用。结果表明,极化子的所有参数都与位置有关。对模型的进一步应用进行了简要讨论。

英文摘要:

A single electron in one dimensional lattice is considered within the framework of extended Holstein model at strong-coupling limit. Disordered density-displacement type electron-phonon interaction is proposed. Basic parameters of small polaron formed due to disordered electron-phonon interaction are calculated. It is shown that disordered electron-phonon interaction substantially influences all properties of the polaron. Depending on disordered electron-phonon interaction polaronic effect might be enhanced or diminished. It turns out that all parameters of the polaron are site dependent. Further application of proposed model is briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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