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arXiv 0907.3630cond-mat.supr-concond-mat.mes-hall
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Andreev反射的散粒噪声和库仑阻塞

Shot noise and Coulomb blockade of Andreev reflection

A. V. Galaktionov, A. D. Zaikin

摘要:

本文导出了正常(N)和超导(S)磁库间短相干导体的低能有效作用量。我们评估了$δG$到Andreev电导的相互作用校正,并证明了NS系统中库仑效应和散粒噪声之间的密切关系。在扩散极限中,载流子的散粒噪声功率和电荷都加倍,产生比正常情况大四倍的$|δG|$。我们的预测可以在未来的实验中直接测试。

英文摘要:

We derive low energy effective action for a short coherent conductor between normal (N) and superconducting (S) reservoirs. We evaluate interaction correction $δG$ to Andreev conductance and demonstrate a close relation between Coulomb effects and shot noise in NS systems. In the diffusive limit doubling of both shot noise power and charge of the carriers yields $|δG|$ four times bigger than in the normal case. Our predictions can be directly tested in future experiments.

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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