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The European Physical Journal B

, Volume 63, Issue 1, pp 65–69 | Cite as

Charge transport through ferromagnet/two-dimensional electron gas/d-wave superconductor junctions with Rashba spin-orbit coupling

  • Z.-Y. ZhangEmail author
Mesoscopic and Nanoscale Systems

Abstract.

Along the lines of Blonder, Tinkham and Klapwijk, we investigate the charge transport through ferromagnet/two-dimensional electronic gas/d-wave superconductor (F/2DEG/S) junctions in the presence of Rashba spin-orbit (SO) coupling and focus our attention on the interplay between spin polarization and spin precession. At zero spin polarization, the spin-mixing scattering resulted from Rashba SO coupling decreases the zero-bias conductance peak. Under spin polarization, spin precession introduces novel Andreev reflection, which competes with the effect of spin-mixing scattering. If the F layer is a half metal, the later effect is overwhelmed by that of novel Andreev reflection. As a result, the zero-bias conductance dip caused by spin polarization is enhanced, and at strong Rashba SO coupling, a split zero-bias peak is found in the gap. In an intermediate region where the two effects are comparable with each other, the zero-bias conductance shows a reentrant behavior as a function of Rashba SO coupling.

PACS.

73.23.-b Electronic transport in mesoscopic systems 74.45.+c Proximity effects; Andreev effect; SN and SNS junctions 74.50.+r Tunneling phenomena; point contacts, weak links, Josephson effects 74.20.Rp Pairing symmetries  

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.Department of PhysicsNanjing UniversityNanjingP.R. China

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