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arXiv 1001.2184cond-mat.mes-hallcond-mat.mtrl-sci
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纳米级电流调制的理论研究

Current modulation at nano-scale level: A theoretical study

Santanu K. Maiti

摘要:

我们探讨了利用介观环在纳米尺度上进行电流调制的可能性。单个介观环或这种环的阵列用于电流调制,其中每个环由在调制作用中起中心作用的时变磁通量$ϕ$穿过。在一个严格约束的框架内,所有的计算都是基于格林函数形式主义。我们提出了数值计算结果的两端电导和电流,支持电流调制的基本特征。该分析对介观或纳米尺度电子器件的制备具有一定的指导意义。

英文摘要:

We explore the possibilities of current modulation at nano-scale level using mesoscopic rings. A single mesoscopic ring or an array of such rings is used for current modulation where each ring is threaded by a time varying magnetic flux $ϕ$ which plays the central role in the modulation action. Within a tight-binding framework, all the calculations are done based on the Green's function formalism. We present numerical results for the two-terminal conductance and current which support the essential features of current modulation. The analysis may be helpful in fabricating mesoscopic or nano-scale electronic devices.

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