Tunneling conductance of ferromagnet/noncentrosymmetric superconductor junctions

被引：22

作者：

Wu, S. ^{[1
]}

Samokhin, K. V. ^{[1
]}

机构：

[1] Brock Univ, Dept Phys, St Catharines, ON L2S 3A1, Canada

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 01期

基金：

英国科研创新办公室;

关键词：

exchange interactions (electron); ferromagnetic materials; spin-orbit interactions; superconducting materials; superconductive tunnelling; ANDREEV REFLECTION; SPECTROSCOPY; TRANSPORT;

D O I：

10.1103/PhysRevB.80.014516

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the extended Blonder-Tinkham-Klapwijk formalism, the tunneling conductance characteristics of a planar junction between a ferromagnet and a noncentrosymmetric superconductor are studied. The effects of the Rashba spin-orbit coupling (RSOC), the exchange energy, and the Fermi wave-vector mismatch (FWM) on the conductance are all taken into account. In the absence of the FWM, it is found that far away from the gap edge the conductance is suppressed by the RSOC while around the gap edge it is almost independent of RSOC. The interplay of the RSOC and the exchange energy causes an enhancement of the subgap conductance, which is more pronounced when the RSOC is small. When the FWM is introduced, it is shown that the conductance is monotonically enhanced as the FWM parameter decreases.

引用

页数：6

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