Evolution of the persistent spin helix in the presence of Hartree-Fock fields

Matthias C. Lüffe, Jeroen Danon, and Tamara S. Nunner
Phys. Rev. B 87, 125416 – Published 14 March 2013

Abstract

We derive a spin diffusion equation for a spin-orbit coupled two-dimensional electron gas including the Hartree-Fock field resulting from first order electron-electron interactions. We find that the lifetime of the persistent spin helix, which emerges for equal linear Rashba and Dresselhaus spin-orbit interactions, can be enhanced considerably for large initial spin polarizations due to the Hartree-Fock field. The reason is a reduction of the symmetry-breaking cubic Dresselhaus scattering rate by the Hartree-Fock field. Also higher harmonics are generated and the polarization of the persistent spin helix rotates out of the (Sy,Sz) plane acquiring a finite Sx component. This effect becomes more pronounced when the cubic Dresselhaus spin-orbit interaction is large.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 11 January 2013

DOI:https://doi.org/10.1103/PhysRevB.87.125416

©2013 American Physical Society

Authors & Affiliations

Matthias C. Lüffe1, Jeroen Danon1,2, and Tamara S. Nunner1

  • 1Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany
  • 2Niels Bohr International Academy, Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 87, Iss. 12 — 15 March 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×