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arXiv 0805.0628cond-mat.mes-hall
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格林函数技术在分子尺度量子输运处理中的应用

Green function techniques in the treatment of quantum transport at the molecular scale

D. A. Ryndyk, R. Gutierrez, B. Song, G. Cuniberti

摘要:

在纳米长度尺度上的电荷(和自旋)传输的理论研究需要使用先进和强大的技术,能够处理相关物理系统的动力学特性,明确包括典型的电/热传输的平衡外的情况,以及考虑到相互作用的影响,在一个系统的方式。平衡格林函数技术及其通过Keldysh形式主义扩展到非平衡情况,构建了当前最先进的量子输运方法的支柱之一,这些方法已在模型哈密顿公式和第一原理方法中实现。我们提供了一个教程概述格林函数的应用,以处理在纳米级的电荷传输的一些基本方面,主要集中在应用模型哈密顿公式。

英文摘要:

The theoretical investigation of charge (and spin) transport at nanometer length scales requires the use of advanced and powerful techniques able to deal with the dynamical properties of the relevant physical systems, to explicitly include out-of-equilibrium situations typical for electrical/heat transport as well as to take into account interaction effects in a systematic way. Equilibrium Green function techniques and their extension to non-equilibrium situations via the Keldysh formalism build one of the pillars of current state-of-the-art approaches to quantum transport which have been implemented in both model Hamiltonian formulations and first-principle methodologies. We offer a tutorial overview of the applications of Green functions to deal with some fundamental aspects of charge transport at the nanoscale, mainly focusing on applications to model Hamiltonian formulations.

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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