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

Burkard, G. and Egues, J. C. and Loss, D.. (2003) Noise of spin-polarized currents at a beam splitter with local spin-orbit interaction. Journal of superconductivity, Vol. 16, H. 2. pp. 237-240.

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Official URL: http://edoc.unibas.ch/dok/A5254698

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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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Kluwer
ISSN:0896-1107
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:27
Deposited On:22 Mar 2012 13:58

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