Spin Relaxation: From 2D to 1D

Abstract

In inversion asymmetric semiconductors, spin-orbit interactions give rise to very effective relaxation mechanisms of the electron spin. Recent work, based on the dimensionally constrained D'yakonov Perel' mechanism, describes increasing electronspin relaxation times for two-dimensional conducting layers with decreasing channel width. The slow-down of the spin relaxation can be understood as a precursor of the onedimensional limit.

Colloquium: Persistent spin textures in semiconductor nanostructures

“…As a result, the Dyakonov-Perel spin relaxation mechanism can be expected to be strongly suppressed by such lateral confinement. This effect is rather independent of particular tuning of spinorbit coupling parameters, but as it clearly leads to enhanced spin lifetimes we shall also summarize the pertaining developments here; for further discussions see also Holleitner (2011).…”