Many-body local field corrections to spin Coulomb drag in a quasi-two-dimensional electron system

ORAL

Abstract

We investigate the effect of exchange and correlation on spin Coulomb drag in a quasi-two-dimensional electron gas of finite transverse width. We find that the finite transverse width of the electron gas causes a significant reduction of the spin Coulomb drag. This reduction, however, is largely compensated by the enhancement coming from the inclusion of many-body local field corrections beyond the random phase approximation. Our calculations are in very good agreement with and confirm the experimental observations of the spin Coulomb drag by C. P. Weber \textit{et al.}, Nature, \textbf{437}, 1330 (2005).

*This work is supported by the Volkswagen Foundation, the DFG Grant Sonderforschungsbereich 689, and NSF Grant No. DMR- 0313681.

–

Authors

  • Samvel Badalyan

    • Department of Radiophysics, Yerevan State University, 375025 Armenia and Department of Physics, University of Regensburg, 93040 Regensburg, Germany

  • Chang Sub Kim

    • Department of Physics, Chonnam National University, 500-757 Gwangju, Korea

  • Giovanni Vignale

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