Externally controlled selective spin transfer through a two-terminal bridge setup

Santanu K. Maiti ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 7, 1-12

Abstract: A new way of getting controlled spin dependent transport through a two-terminal bridge setup is explored. The system comprises a magnetic quantum ring which is directly coupled to a magnetic quantum wire and subjected to an in-plane electric field perpendicular to the wire. Without directly changing system parameters, one can regulate spin currents simply by tuning the external electric field under a finite bias drop across the wire. For some particular field strengths a high degree of spin polarization can be achieved and thus the system can essentially be utilized as an externally controlled spin polarized device. A detailed comparison of spin current magnitudes obtained from other bridge setups is also examined to make the present investigation a self contained study. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1140/epjb/e2015-60067-8

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