Spin injection at remanence into III-V spin light-emitting diodes using (Co/Pt) ferromagnetic injectors

J. Zarpellon,1,2 H. Jaffrès,1,* J. Frougier,1 C. Deranlot,1 J. M. George,1 D. H. Mosca,2 A. Lemaı̂tre,3 F. Freimuth,4 Quang Ha Duong,5 P. Renucci,5 and X. Marie5 1Unité Mixte de Physique CNRS–Thales and Université Paris-Sud, Campus de Polytechnique, 1, Avenue Augustin Fresnel, 91767, Palaiseau, Cedex France 2Laboratório de Nanoestruturas para Sensores, Universidade Federal do Paraná, Centro Politécnico, Caixa Postal 19091, 81531-990 Curitiba, Brazil 3Laboratoire de Photonique et de Nanostructures, route de Nozay, 91460 Marcoussis, France 4Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany 5Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue de Rangueil, 31077 Toulouse, France (Received 9 August 2012; published 19 November 2012)