Mesoscopic spin-dependent reflection experiments on InSb- and InAs-based heterostructures
Chen, Hong Peters, J. A Pan, Yue Heremans, J. J Goel, N Chung, S. J Santos, M. B Van Roy, W Borghs, Gustaaf #
Elsevier science bv
Physica E - Low-Dimensional Systems & Nanostructures vol:34 issue:1-2 pages:374-376
Spin-orbit interaction in two-dimensional electron systems can lead to a spin-dependent reflection of carriers off a lithographic barrier. Scattering of a spin-unpolarized beam from the barrier leads to the creation of two fully spin-polarized side beams in addition to an unpolarized specularly reflected beam. We experimentally demonstrate a method to create spin-polarized beams of ballistic electrons in mesoscopic samples fabricated on InSb/InAlSb and InAs/AlGaSb heterostructures. We describe two geometries, one open and one closed, in which the spin-dependent reflection and spin-dependent semiclassical trajectories were observed. (c) 2006 Elsevier B.V. All rights reserved.