Phys. Rev. B 63, 161307(R) (2001) [4 pages]Ballistic spin-filter transistor
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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.63.161307
DOI:
10.1103/PhysRevB.63.161307
PACS:
71.20.-b, 71.70.Ej, 73.21.-b, 73.40.Sx
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