| Issue |
EPL
Volume 82, Number 6, June 2008
|
|
|---|---|---|
| Article Number | 67005 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/82/67005 | |
| Published online | 05 June 2008 | |
Magneto-spin Hall conductivity of a two-dimensional electron gas
1
CNISM and Dipartimento di Fisica “E. Amaldi", Università Roma Tre - via della Vasca Navale 84, 00146 Roma, Italy, EU
2
Institut für Physik, Universität Augsburg - 86135 Augsburg, Germany, EU
Corresponding author: raimondi@fis.uniroma3.it
Received:
11
January
2008
Accepted:
22
April
2008
It is shown that the interplay of long-range disorder and in-plane magnetic field gives rise to an out-of-plane spin polarization and a finite spin Hall conductivity of the two-dimensional electron gas in the presence of Rashba spin-orbit coupling. A key aspect is provided by the electric-field
induced in-plane spin polarization. Our results are obtained first in the clean limit where the spin-orbit splitting is much larger than the disorder broadening of the energy levels via the diagrammatic evaluation of the Kubo formula. Then the results are shown to hold in the full range of the disorder parameter α pF
by means of the quasiclassical Green function technique.
PACS: 72.25.Dc – Spin polarized transport in semiconductors / 72.25.Rb – Spin relaxation and scattering / 72.10.Fk – Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect)
© EPLA, 2008
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