A similar effect in which the spin current of an electron gets deflected
is termed the spin Hall effect, and its existence relies on the relativistic spin-orbit coupling in
a solid. In work which has recently appeared in Nature Communications, Prof. Arun Paramekanti
and collaborators at the University of Maryland and the Joint Quantum Institute, show how
such a spin Hall effect can arise in an entirely different manner, from interactions between
particles and a mechanism called `order by disorder', in ultracold atomic gases, paving the
way for future realizations and applications of this effect in solids.

University of Maryland story - http://jqi.umd.edu/news/restoring-order
Link to paper - http://www.nature.com/ncomms/2014/141010/ncomms6174/full/ncomms6174.html