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arXiv 0712.0750cond-mat.mes-hall
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单分子电流的振动诱导修正

Vibration-induced correction to the current through a single molecule

R. Egger, A. O. Gogolin

摘要:

本文给出了弱电子-声子耦合下振动分子对电流-电压关系的微扰修正的解析结果。非线性电导在$eV=\hbar ω_0$处表现出阶梯状特征,其中$ω_0$是振动频率。我们建立了标准的步骤,在电导(向上或向下)的符号变化。这种转变被证明是非普遍的,基本上是由所有的系统参数。

英文摘要:

We provide analytical results for the perturbative correction to the current-voltage relation through a vibrating molecule for weak electron-phonon coupling. The nonlinear conductance exhibits a step-like feature at $eV=\hbar ω_0$, where $ω_0$ is the vibration frequency. We establish criteria for the sign change of the step in the conductance (up or down). This transition turns out to be nonuniversal and is governed by essentially all system parameters.

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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