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Spin-dependent shot noise in diluted-magnetic-semiconductor/ semiconductor heterostructures

Author

Listed:
  • Y. Guo
  • L. Han
  • R. Zhu
  • W. Xu

Abstract

We investigated the shot noise properties in the diluted-magnetic-semiconductor/semiconductor heterostructures, where the sp-d exchange interaction gives rise to a giant spin splitting when an external magnetic field is applied along the growth direction of the heterostructures. It is found that the noise becomes strongly spin-dependent and can be greatly modulated not only by the external magnetic and electric fields, but also by the structural configuration and geometric parameters. Both the spin-up and spin-down components of the noise spectral density can be greatly suppressed by the magnetic field. The Fano factor is notably sensitive to the transmission probabilities, which varies greatly with the spin-polarization, the external magnetic field, and the structural configuration. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Suggested Citation

  • Y. Guo & L. Han & R. Zhu & W. Xu, 2008. "Spin-dependent shot noise in diluted-magnetic-semiconductor/ semiconductor heterostructures," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 62(1), pages 45-51, March.
    • Handle: RePEc:spr:eurphb:v:62:y:2008:i:1:p:45-51
    DOI: 10.1140/epjb/e2008-00117-x
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