This gif filmed in Tofino is from 2008 and it explains the ‘injector-detector’ device used to generate and measure spin currents. Charge currents flow to the left, while spin currents flow both ways.
It pertains, for example, to this paper we wrote: http://arxiv.org/abs/1208.3106 (this is an arxiv-only publication!)
spin and coffee 
You must be logged in to post a comment.