Theory of half-metal/superconductor heterostructures -: art. no. 137003

被引：332

作者：

Eschrig, M

Kopu, J

Cuevas, JC

Schön, G

机构：

[1] Univ Karlsruhe, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany

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

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.90.137003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the Josephson coupling between two singlet superconductors separated by a half-metallic magnet. The mechanism behind the coupling is provided by the rotation of the quasiparticle spin in the superconductor during reflection events at the interface with the half metal. Spin rotation induces triplet correlations in the superconductor which, in the presence of surface spin-flip scattering, results in an indirect Josephson effect between the superconductors. We present a theory appropriate for studying this phenomenon and calculate physical properties for a superconductor/half-metal/superconductor heterostructure.

引用

页数：4

共 26 条

[1] Interplay of spin-discriminated Andreev bound states forming the 0-π transition in superconductor-ferromagnet-superconductor junctions -: art. no. 144502 [J].