Multichannel field-effect spin barrier selector
  We have studied spin carrier dynamics under full spin-orbit coupling. The anisotropy of dispersions for independent circular spinor polarizations is explored as a possible vertical multichannel voltage controlled spin-filter. Small voltage variations are found to select the current polarizations in a resonant tunneling geometry. 
G. E. Marques, A. C. R. Bittencourt, C. F. Destefani, Sergio E. Ulloa