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Two-dimensional Fröhlich polaron with Rashba and Dresselhaus spin-orbit coupling

  • K.A. Vardanyan
  • A.L. VartanianEmail author
  • A.A. Kirakosyan
Regular Article

Abstract

We investigate the simultaneous effect of Rashba and Dresselhaus spin-orbit interactions on the formation of Fröhlich polarons in two-dimensional semiconductors in weak electron-phonon coupling approximation. The results illustrate that the spin-orbit coupling terms may significantly affect the polaron properties. We show that in the presence of both SO coupling terms the self-energy correction of the electron energy as well as the polaron effective mass exhibit an angular anisotropy unlike the case when only one of the spin-orbit coupling terms (Rashba or Dresselhaus) is considered. The simultaneous consideration of the Rashba and Dresselhaus mechanisms shows that polaronic effect may become either stronger or weaker depending on directions, a phenomenon which does not occur when the spin-orbit interaction is not taken into account.

Keywords

Mesoscopic and Nanoscale Systems 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • K.A. Vardanyan
    • 1
  • A.L. Vartanian
    • 1
    Email author
  • A.A. Kirakosyan
    • 1
  1. 1.Department of Solid State PhysicsYerevan State UniversityYerevanArmenia

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