Infinite spin diffusion length of any spin polarization along direction perpendicular to effective magnetic field from Dresselhaus and Rashba spin-orbit couplings with identical strengths in (001) GaAs quantum wells

Abstract

In this note, we show that the latest spin grating measurement of spin helix by Koralek {\em et al.} [Nature {\bf 458}, 610 (2009)] provides strong evidence of the infinite spin diffusion length of any spin polarization along the direction perpendicular to the effective magnetic field from the Dresselhaus and Rashba spin-orbit couplings with identical strengths in $(001)$ GaAs quantum wells, predicted by Cheng {\em et al.} [Phys. Rev. B {\bf 75}, 205328 (2007)].

2 pages, J. Supercond. Nov. Magn. 22, 2009, in press

References in corpus (5)

• Emergence of the persistent spin helix in semiconductor quantum wells
• Kinetic theory of spin transport in n-typed semiconductor quantum wells
• Anisotropic spin transport in GaAs quantum wells in the presence of competing Dresselhaus and Rashba spin-orbit-coupling strengths
• Spin relaxation under identical Dresselhaus and Rashba coupling strengths in GaAs quantum wells
• Spin relaxation in $n$-type GaAs quantum wells with transient spin grating