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arXiv · 0709.1057

Spin-orbit coupling effects in one-dimensional ballistic quantum wires

J. E. Birkholz·V. Meden
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Abstract

We study the spin-dependent electronic transport through a one-dimensional ballistic quantum wire in the presence of Rashba spin-orbit interaction. In particular, we consider the effect of the spin-orbit interaction resulting from the lateral confinement of the two-dimensional electron gas to the one-dimensional wire geometry. We generalize a situation suggested earlier [P. Streda and P. Seba, Phys. Rev. Lett. 90, 256601 (2003)] which allows for spin-polarized electron transport. As a result of the lateral confinement, the spin is rotated out of the plane of the two-dimensional system. We furthermore investigate the spin-dependent transmission and the polarization of an electron current at a potential barrier. Finally, we construct a lattice model which shows similar low-energy physics. In the future, this lattice model will allow us to study how the electron-electron interaction affects the transport properties of the present setup.

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J. E. Birkholz, V. Meden. 2007-10-23. Spin-orbit coupling effects in one-dimensional ballistic quantum wires. https://doi.org/10.1088/0953-8984%2F20%2F8%2F085226

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