Origin of the spin-triplet Andreev reflection at ferromagnet/ s -wave superconductor interface

To understand the origin of the spin-triplet Andreev reflection which may appear at a ferromagnet ( F ) / s -wave superconductor ( S ) interface, we study tunneling conductance spectra of F / 2 DEG / s -wave S tunnel junctions, with 2DEG the two-dimensional electron gas with Rashba spin-orbit coupli...

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Bibliographic Details
Published inJournal of applied physics Vol. 103; no. 2; pp. 023921 - 023921-5
Main Authors Feng, Cui Di, Zheng, Zhi Ming, Ji, Yi Qun, Niu, Zhi Ping, Xing, D. Y.
Format Journal Article
LanguageEnglish
Published American Institute of Physics 15.01.2008
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Summary:To understand the origin of the spin-triplet Andreev reflection which may appear at a ferromagnet ( F ) / s -wave superconductor ( S ) interface, we study tunneling conductance spectra of F / 2 DEG / s -wave S tunnel junctions, with 2DEG the two-dimensional electron gas with Rashba spin-orbit coupling and subject to a magnetic field. It is found that both spin-flip and broken time-reversal symmetry in the 2DEG are conditions necessary to giving rise to the novel Andreev reflection and spin-triplet pairing correlations.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2837059