Spin-precession-induced currents through ferromagnet/nanomagnet/superconductor junctions

Zhi Ping Niu ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 11, 1-5

Abstract: The spin-precession-induced current through ferromagnet/nanomagnet/superconductor junctions is investigated by using the nonequilibrium Green’s function method. It is found that the charge current I c for the spin precession frequency ω less than the energy gap Δ only arises from the equal-spin Andreev reflection, which is independent of the spin polarization p of the ferromagnetic lead, while that for ω > Δ mainly originates from the quasiparticle’s contribution. Both equal-spin AR and quasiparticle scattering processes contribute to the spin current I s and the quasiparticle scattering process plays a dominant role. While I c for ω > Δ can be enhanced by the spin polarization p, I s decreases with p. These features may be of interest for ongoing experiments in the field of molecular spintronics. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1140/epjb/e2013-40682-1

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