%0 Journal Article
%T Electrical spin injection and detection in Germanium using three terminal geometry
%A A. Jain
%A L. Louahadj
%A J. Peiro
%A J. C. Le Breton
%A C. Vergnaud
%A A. Barski
%A C. Beign¨¦
%A L. Notin
%A A. Marty
%A V. Baltz
%A S. Auffret
%A E. Augendre
%A H. Jaffr¨¨s
%A J. M. George
%A M. Jamet
%J Physics
%D 2011
%I arXiv
%R 10.1063/1.3652757
%X In this letter, we report on successful electrical spin injection and detection in \textit{n}-type germanium-on-insulator (GOI) using a Co/Py/Al$_{2}$O$_{3}$ spin injector and 3-terminal non-local measurements. We observe an enhanced spin accumulation signal of the order of 1 meV consistent with the sequential tunneling process via interface states in the vicinity of the Al$_{2}$O$_{3}$/Ge interface. This spin signal is further observable up to 220 K. Moreover, the presence of a strong \textit{inverted} Hanle effect points at the influence of random fields arising from interface roughness on the injected spins.
%U http://arxiv.org/abs/1107.3510v1