Space- and time-resolved measurements of spin drift and diffusion are performed on a GaAs-hosted two-dimensional electron gas. For spins where forward drift is compensated by backward diffusion, we find a precession frequency in absence of an external magnetic field. The frequency depends linearly on the drift velocity and is explained by the cubic Dresselhaus spin-orbit interaction, for which drift leads to a spin precession angle twice that of spins that diffuse the same distance.
@article{arxiv.1602.05095,
title = {Current-controlled Spin Precession of Quasi-Stationary Electrons in a Cubic Spin-Orbit Field},
author = {P. Altmann and F. G. G. Hernandez and G. J. Ferreira and M. Kohda and C. Reichl and W. Wegscheider and G. Salis},
journal= {arXiv preprint arXiv:1602.05095},
year = {2016}
}