Noise of spin-polarized currents at a beam splitter with local spin-orbit interaction

Burkard, Guido; Egues, Jose C.; Loss, Daniel

Noise of spin-polarized currents at a beam splitter with local spin-orbit interaction

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Date

2003

Authors

Burkard, Guido

Egues, Jose C.

Loss, Daniel

DOI (citable link)

10.1023/A:1023637511442

Collections

Physik

Publication type

Journal article

Published in

Journal of Superconductivity ; 16 (2003), 2. - pp. 237-240. - ISSN 0896-1107. - eISSN 1572-9605

Abstract

An electronic beam splitter with a local Rashba spin–orbit coupling can serve as a detector for spin-polarized currents. The spin–orbit coupling plays the role of a tunable spin rotator and can be controlled via a gate electrode on top of the conductor. We use spin-resolved scattering theory to calculate the zero-temperature current fluctuations (shot noise) for such a four-terminal device and show that the shot noise is proportional to the spin polarization of the source. Moreover, we analyze the effect of spin–orbit-induced intersubband coupling, leading to an additional spin rotation.

Subject (DDC)

530 Physics

Keywords

noise, spin, spin-polarized transport, spin–orbit, Rashba

Cite This

ISO 690

BURKARD, Guido, Jose C. EGUES, Daniel LOSS, 2003. Noise of spin-polarized currents at a beam splitter with local spin-orbit interaction. In: Journal of Superconductivity. 16(2), pp. 237-240. ISSN 0896-1107. eISSN 1572-9605. Available under: doi: 10.1023/A:1023637511442

BibTex

@article{Burkard2003Noise-29150,
  year={2003},
  doi={10.1023/A:1023637511442},
  title={Noise of spin-polarized currents at a beam splitter with local spin-orbit interaction},
  number={2},
  volume={16},
  issn={0896-1107},
  journal={Journal of Superconductivity},
  pages={237--240},
  author={Burkard, Guido and Egues, Jose C. and Loss, Daniel}
}

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