<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wunnicke, O</style></author><author><style face="normal" font="default" size="100%">P. Mavropoulos</style></author><author><style face="normal" font="default" size="100%">R. Zeller</style></author><author><style face="normal" font="default" size="100%">P.H. Dederichs</style></author><author><style face="normal" font="default" size="100%">Grundler, D</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ballistic spin injection from Fe(001) into ZnSe and GaAs</style></title><secondary-title><style face="normal" font="default" size="100%">PHYSICAL REVIEW B</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUN 15</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">24</style></number><volume><style face="normal" font="default" size="100%">65</style></volume><pages><style face="normal" font="default" size="100%">241306</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We consider the spin injection from Fe into ZnSe and GaAs in the ballistic limit. By means of the ab initio screened Korringa-Kohn-Rostoker method we calculate the ground-state properties of epitaxial Fe\textbackslash{}ZnSe(001) and Fe\textbackslash{}GaAs(001) heterostructures. Three injection processes are considered: injection of hot electrons and injection of ``thermal{''} electrons with and without an interface barrier. The calculation of the conductance by the Landauer formula shows that these interfaces act like a nearly ideal spin filter, with spin polarization as high as 99%. This can be traced back to the symmetry of the band structure of Fe for normal incidence.</style></abstract></record></records></xml>