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arXiv 0908.2884cond-mat.mes-hallcond-mat.mtrl-sci
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联苯分子的量子输运:磁通量的影响

Quantum Transport in a Biphenyl Molecule: Effects of Magnetic Flux

Santanu K. Maiti

摘要:

基于格林函数方法研究了联苯分子的电子输运性质。分子夹在两个金属电极之间,每个苯环都被磁通量$ϕ$穿过。结果集中在分子的影响,电极耦合强度和磁通量$ϕ$。我们的数值研究表明,对于一个固定的分子耦合,通过桥的电流幅度可以{ \em调节}显着只是通过调整流量$ϕ$。这方面可以用于设计纳米级电子电路。

英文摘要:

Electron transport properties of a biphenyl molecule are studied based on the Green's function formalism. The molecule is sandwiched between two metallic electrodes, where each benzene ring is threaded by a magnetic flux $ϕ$. The results are focused on the effects of the molecule to electrode coupling strength and the magnetic flux $ϕ$. Our numerical study shows that, for a fixed molecular coupling, the current amplitude across the bridge can be {\em regulated} significantly just by tuning the flux $ϕ$. This aspect may be utilized in designing nano-scale electronic circuits.

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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