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arXiv 1305.6293cond-mat.mes-hall
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通过门控单分子结的量子干涉

Quantum interference through gated single-molecule junctions

Daniel A. Lovey, Rodolfo H. Romero

摘要:

本文根据孤立分子的格林函数讨论了通过分子结的透射谱的一般形式。通过引入紧束缚方法,我们能够将格林函数的性质转化为实际的图形规则,用于预先评估在给定的连接位置选择的能量范围内可能存在的反共振。分析的例子与苯分子下的一个假设的本地门,它允许一个连续地调整单原子的现场能量,为各种连接拓扑结构和门的位置。

英文摘要:

We discuss the general form of the transmission spectrum through a molec- ular junction in terms of the Green function of the isolated molecule. By introducing a tight binding method, we are able to translate the Green func- tion properties into practical graphical rules for assessing beforehand the possible existence of antiresonances in an energy range for a given choice of connecting sites. The analysis is exemplified with a benzene molecule under a hypothetical local gate, which allows one to continuously tune the on-site energy of single atoms, for various connection topologies and gate positions.

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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