Superconductor-quantum dot-superconductor junction in the Kondo regime

被引：71

作者：

Avishai, Y ^{[1
]}

Golub, A

Zaikin, AD

机构：

[1] Ben Gurion Univ Negev, Ilse Katz Ctr Nanotechnol, IL-84105 Beer Sheva, Israel

[2] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[3] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[4] PN Lebedev Phys Inst, IETamm Dept Theoret Phys, Moscow 117924, Russia

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.67.041301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron transport between two superconductors through an Anderson impurity in the Kondo regime is investigated within the slave boson mean-field approximation. The current, shot-noise power and Fano factor are displayed versus the applied bias voltage in the subgap region and found to be strongly dependent on the ratio between the Kondo temperature T-K and the superconducting gap Delta. In particular, the I-V curve exposes an excess current in the limit T-K/Delta>>1.

引用

页数：4