Can an electric current orient spins in quantum wells?
  A longstanding theoretical prediction is the orientation of spins by an electrical current flowing through low-dimensional carrier systems of sufficiently low crystallographic symmetry. Here we show by means of terahertz transmission experiments through two-dimensional hole systems a growing spin orientation with an increasing current at room temperature. 
S.D. Ganichev, S.N. Danilov, Petra Schneider, V.V. Bel'kov, L.E.   Golub, W. Wegscheider, D. Weiss, W. Prettl