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Determining the spin Hall conductance via charge transport

Erlingsson, S. I. and Loss, D.. (2005) Determining the spin Hall conductance via charge transport. Physical Review B, Vol. 72, H. 12 , 121310, 4 S..

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Official URL: http://edoc.unibas.ch/dok/A5254656

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Abstract

We propose a scheme where measurements of charge current and its noise can be used to determine spin-dependent transport properties. The scheme does not require the detection of individual spin components of the current and no magnetic or optical elements are needed. To illustrate the scheme we use it to determine the spin Hall conductance in a four-terminal setup, and also the spin polarization of a current injected from a ferromagnet into a semiconductor. Starting from the scattering formalism we express the spin current, and the relevant spin-dependent transport quantities, in terms of spin-dependent transmission coefficients. We derive expressions relating these coefficients to the charge current and noise. Measurements of current and noise thus allows the determination of the spin dependent transport quantities via these expressions.
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:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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