Quantum dot in the Kondo regime coupled to p-wave superconductors

Article

关键词: CARBON NANOTUBES;    IMPURITY;    TRANSISTOR;    SCATTERING;    RESONANCE;    JUNCTION;    BARRIER;    STATES;    NOISE;   

DOI  :  10.1103/PhysRevB.68.045312

来源: SCIE

【 摘 要 】

The physics of junctions containing p-wave superconducting and normal leads weakly coupled to an Anderson impurity in the Kondo regime is elucidated. For p-wave (unlike s wave) superconducting leads, midgap surface states play an important role in the tunneling process and help the formation of the Kondo resonance. The current, shot-noise power, and Fano factor are calculated and displayed as functions of the applied voltage V in the subgap region eV < Delta (the superconducting gap). In addition, the Josephson current for a quantum dot in the Kondo regime weakly coupled on both sides to p-wave superconductors is computed as function of temperature and phase. The peculiar differences between the cases of s-wave and p-wave superconducting leads are pointed out.

【 授权许可】

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