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Institut f. Physik
FG Nanostrukturierte Materialien
Martin-Luther-Universitat
Halle-Wittenberg
Von-Danckelmann-Platz 3,
D-06120 Halle, Germany

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[Veröffentlichungen] [Patente] [Graduierungsarbeiten] [Berichte] [Poster]
Abstract

L.W. Molenkamp, G. Schmidt, G.E.W. Bauer
Rashba Hamiltonian and Electron Transport
Phys. Rev. B 64 (Rap. Comm.) (2015-02-24 16:43:59), 121202/1-121202/4

The Rashba Hamiltonian describes the splitting of the conduction band as a result of spin-orbit coupling in the presence of an external field and is commonly used to model the electronic structure of confined narrow-gap semiconductors. Due to the mixing of spin states some care has to be exercised in the calculation of transport properties. We derive the velocity operator for the Rashba-split conduction band and demonstrate that the transmission of an interface between a ferromagnet and a Rashba-split semiconductor does not depend on the magnetization direction, in contrast with previous assertions in the literature.

http://journals.aps.org/prb/pdf/10.1103/PhysRevB.64.121202
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