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Title: Electrical spin injection in a ferromagnet/tunnel barrier/semiconductor heterostructure
Authors: Motsnyi, VF
De Boeck, J
Das, Johan
Van Roy, Willem
Borghs, Gustaaf
Goovaerts, E
Safarov, VI #
Issue Date: Jul-2002
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:81 issue:2 pages:265-267
Abstract: We demonstrate experimentally the electrical electron spin injection from a ferromagnetic metal/tunnel barrier contact into a III-V semiconductor light emitting diode (LED). The injected electrons have in-plane spin orientation. By applying a relatively small oblique external magnetic field this spin orientation within the semiconductor can be manipulated to have a nonzero out-of-plane component. By measuring the resulting circular polarization of the emitted light, we observe injected spin polarization in excess of 9% at 80 K in a CoFe/AlOx/(Al,Ga)As/GaAs surface-emitting spin-LED. (C) 2002 American Institute of Physics.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering - miscellaneous
Physics and Astronomy - miscellaneous
# (joint) last author

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