Spin-Dependent Transport of Electrons in a Shuttle Structure

Details Spin-Dependent Transport of Electrons in a Shuttle Structure Spin-Dependent Transport of Electrons in a Shuttle Structure

2004-02-10

arxiv.org/abs/cond-mat/0402284v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages, 3 figures

Scientific paper

We consider "shuttling" of spin-polarized electrons between two magnetic electrodes (half-metals) by a movable dot with a single electronic level. If the magnetization of the electrodes is antiparallel we show that the transmittance of the system can be changed by orders of magnitude if an external magnetic field, perpendicular to the polarization of the electronic spins, is applied. A giant magnetotransmittance effect can be achieved for weak external fields of order $1\div 10$ Oe.

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