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Nonlinear inverse spin galvanic effect in anisotropic disorder-free systems

  • Iryna Miatka
  • Marco BarbieriEmail author
  • Roberto Raimondi
Regular Article
  • 4 Downloads

Abstract

Spin transport phenomena in solid materials suffer limitations from spin relaxation associated to disorder or lack of translational invariance. Ultracold atoms, free of that disorder, can provide a platform to observe phenomena beyond the usual two-dimensional electron gas. By generalizing the approach used for isotropic two-dimensional electron gases, we theoretically investigate the inverse spin galvanic effect in the two-level atomic system in the presence of anisotropic Rashba-Dresselhaus spin-orbit couplings (SOC) and external magnetic field. We show that the combination of the SOC results in an asymmetric case: the total spin polarization considered for a small momentum has a longer spin state than in a two-dimensional electron gas when the SOC field prevails over the external electric field. Our results can be relevant for advancing experimental and theoretical investigations in spin dynamics as a basic approach for studying spin state control.

Graphical abstract

Keywords

Cold Matter and Quantum Gas 

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Copyright information

© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Dipartimento di Matematica e Fisica, Università degli Studi Roma TreRomeItaly
  2. 2.Dipartimento di Scienze, Università degli Studi Roma TreRomeItaly

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