期刊
EPL
卷 100, 期 1, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/100/17012
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资金
- National Natural Science Foundation of China [11004104]
We study the conductance spectra of ferromagnet/superconductor (F/S) junctions in the presence of the interfacial Rashba spin-orbit coupling (IRSOC). IRSOC provides the spin-flip mechanism with which the equal-spin Andreev reflection occurs. We first investigate the effect of the F spin polarization P on the conductance G and find that a zero-bias G peak forms for the highly polarized F in F/s-wave and F/d(x2-y2)-wave S junctions, while in F/d(xy)-wave S junctions with increasing P, G exhibits a conversion from a zero-bias peak to a zero-bias dip. For half-metal F (HMF)/S junctions with s-wave and d(x2)-(y2)-wave pairing by varying the magnetization direction a, G first increases and then decreases, exhibiting a maximal zero-bias peak at alpha = p/2, and in F/dxy-wave S junctions, G at nonzero bias exhibits a nonmonotonic behavior with a. The effect of the Fermi wave vector mismatch on G is also discussed. Copyright (C) EPLA, 2012
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