Patent ID: 8217384
Filing Date: 2012-07-10
Classification: H01L

Abstract:
1. A device for manipulating a direction of motion of current carriers, the device comprising a structure containing a two-dimensional gas of the current carriers configured to define at least one region of inhomogeneity characterized by a substantially varying value of at least one parameter selected from a spin-orbit coupling constant, density of the spin carrying current carriers, and a mobility of the gas, said structure is configured to create the region of inhomogeneity in the form of a lateral interface between first and second regions differing from each other at least in the gas mobility such that the first region is diffusive and the second region is ballistic, the device being thereby operable for emitting the current carriers from the diffusive region into the ballistic region with a wide angular range of directions of propagation of the current carriers in the ballistic region, thereby enabling directing the current carriers to one or more desired range of angles of propagation in the ballistic region.