Spin dynamics in rolled-up two dimensional electron gases

Details Spin dynamics in rolled-up two dimensional electron gases Spin dynamics in rolled-up two dimensional electron gases

2007-05-22

arxiv.org/abs/0705.3174v1

New J. Phys. 9, 346 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages 1 fig

Scientific paper

10.1088/1367-2630/9/9/346

A curved two dimensional electron gas with spin-orbit interactions due to the radial confinement asymmetry is considered. At certain relation between the spin-orbit coupling strength and curvature radius the tangential component of the electron spin becomes a conserved quantity for any spin-independent scattering potential that leads to a number of interesting effects such as persistent spin helix and strong anisotropy of spin relaxation times. The effect proposed can be utilized in the non-ballistic spin-field-effect transistors.

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