Pseudospin Resonance in Semiconductor Bilayers

ORAL

Abstract

The pseudospin degree of freedom in a semiconductor bilayer gives rise to a collective mode analogous to the ferromagnetic resonance mode of a ferromagnet. We present a theory of the dependence of the energy and the damping of this mode on layer separation $d$. Based on these results, we discuss the possibility of realizing transport-current driven pseudospin-transfer oscillators in semiconductors.

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Authors

  • Saeed H. Abedinpour

    • NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy

  • Marco Polini

    • NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy

  • Mario P. Tosi

    • NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy

  • Bilal Tanatar

    • Department of Physics, Bilkent University, Bilkent, 06800 Ankara, Turkey

  • Allan H. MacDonald

    • Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA

  • Giovanni Vignale

    • Department of Physics and Astronomy, University of Missouri-Columbia, Columbia, Missouri 65211, USA