Inverse spin galvanic effect in topological-insulator based heterostructures

ORAL

Abstract

We study the inverse spin galvanic effect in heterostructures formed by a layer of a three dimensional strong topological insulator (TI) and a magnetic material. We consider different configurations for the heterostructure and for the contacts. We carefully treat the effect on the TI bands of the proximity of a magnetic material and take into account both intra-band and inter-band contributions to the current-induced spin polarization of the TI surface states. Finally, we discuss the relevance of our results for recent experiments.

*Work supported by ONR-N00014-13-1-0321, ACS-PRF \# 53581-DNI5, and the Jeffress Memorial Trust.

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Authors

  • Martin Rodriguez-Vega

    • Department of Physics, College of William and Mary, Williamsburg, VA 23187, USA

  • Georg Schwiete

    • Johannes Gutenberg University Mainz
    • Institut f\"ur Physik, Johannes Gutenberg Universit\"at Mainz, Mainz, Germany

  • Jairo Sinova

    • Institut fuer Physik, Johannes Gutenberg Universitaet Mainz, D-55099 Mainz, Germany
    • Institut f\"ur Physik, Johannes Gutenberg Universit\"at Mainz, Mainz, Germany
    • Institut f\"ur Physik, Johannes Gutenberg Universit\"at Mainz, D-55099 Mainz, Germany

  • Enrico Rossi

    • Physics Department, College of William and Mary
    • Department of Physics, College of William and Mary, Williamsburg, VA 23187, USA