Spin densities in parabolic quantum wires with Rashba spin-orbit interaction

Details Spin densities in parabolic quantum wires with Rashba spin-orbit interaction Spin densities in parabolic quantum wires with Rashba spin-orbit interaction

2007-01-23

arxiv.org/abs/cond-mat/0701564v1

Phys. Stat. Sol. C 3, 4317 (2006) (PASPS IV Proceedings)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1002/pssc.200672838

Using canonical transformations we diagonalize approximately the Hamiltonian of a gaussian wire with Rashba spin-orbit interaction. This proceedure allows us to obtain the energy dispersion relations and the wavefunctions with good accuracy, even in systems with relatively strong Rashba coupling. With these eigenstates one can calculate the non-equilibrium spin densities induced by applying bias voltages across the sample. We focus on the $z$-component of the spin density, which is related to the spin Hall effect.

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