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Spin-dependent ballistic transport in a mesoscopic two-dimensional electron system with two metallic ferromagnetic electrodes is studied using the Landauer-Büttiker formalism. Our calculations predict a pronounced spin-valve effect in the ballistic regime for, e.g., Fe on InAs. The origin is spin filtering at the interfaces. In this spintronic device, the magnetoconductance ratio can be controlled via a gate voltage.
Type
research article
Authors
Publication date
2001
Published in
Volume
63
Issue
16
Article Number
161307
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
July 8, 2015
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