Abnormal minigap induced by superconducting proximity effects in a metallic film

被引：1

作者：

Yu Hua-Ling ^{[1
]}

机构：

[1] Huaiyin Normal Coll, Dept Phys & Elect, Huaian 223001, Peoples R China

来源：

ACTA PHYSICA SINICA | 2007年 / 56卷 / 10期

关键词：

superconductor proximity effects; Andreev reflection; coherent tunneling; sequential tunneling;

D O I：

10.7498/aps.56.6038

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The scattering matrix approach is applied to study tunneling spectra in normal metal/normal metal/ superconductor double junctions. The abnormal minigap in tunneling conductance is attributed to the phase coherence of electrons and Andreev- reflected holes in the middle metallic film. We consider a combination of the coherent tunneling with the sequential tunneling and the calculated results provide a reasonable explanation for the abnormal minigap observed in recent experiments.

引用

页码：6038 / 6044

页数：7

共 32 条

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