Nonlocal transport properties of topological insulator F/I/SC/I/F junction with perpendicular magnetization

R. Vali () and H.F. Khouzestani

The European Physical Journal B: Condensed Matter and Complex Systems, 2014, vol. 87, issue 1, 1-6

Abstract: We investigate theoretically the nonlocal transport properties in a ferromagnet/insulator/superconductor/insulator/ferromagnet (F/I/SC/I/F) junction with perpendicular magnetization formed on a topological insulator. The nonlocal conductance through the junction depends strongly on whether the perpendicular magnetizations of the two ferromagnets are in a parallel or an antiparallel alignment. This stems from the fact that on the surface of three dimensional topological insulator the exchange field acts as vector potential and from spin-momentum locking property of the topological insulator surface states. It is found that the nonlocal conductance as a function of barrier strength of the I regions exhibits a quantum switch on-off property. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1140/epjb/e2014-40872-3

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