Transport through a single Anderson impurity coupled to one normal and two superconducting leads
Transport through a single Anderson impurity coupled to one normal and two superconducting leads
复制标题
通过与一根普通导线和两根超导导线耦合的单个安德森杂质进行传输
DOI：
10.1088/1742-6596/391/1/012146
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Akira Oguri and Yoichi Tanaka
中科院分区：
文献类型：
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作者：
金崎順一;谷村克己;Akira Oguri and Yoichi Tanaka
本文研究了耦合到一个正常和两个超导（SC）引线的量子点中近藤效应和Andreev-Josephson效应之间的相互作用。在大能隙极限下，对于相互作用的Bogoliubov粒子，系统的低能态可以用局域费米液体精确描述。的相移和Bogoliubov粒子的重整化参数的变化取决于两个SC引线之间的约瑟夫森相位差。我们探索的精确功能之间发生的近藤单线态和本地库珀配对状态的f变化，使用数值重整化群方法的交叉。
We study the interplay between the Kondo and Andreev-Josephson effects in a quantum dot coupled to one normal and two superconducting (SC) leads. In the large gap limit, the low-energy states of this system can be described exactly by a local Fermi liquid for the interacting Bogoliubov particles. The phase shift and the renormalized parameters for the Bogoliubov particles vary depending on the Josephson phase ϕ between the two SC leads. We explore the precise features of a crossover that occurs between the Kondo singlet and local Cooper-pairing states as f varies, using the numerical renormalization group approach.