NDLI: Electrical spin injection from ferromagnetic MnAs metal layers into GaAs

Content Provider	Semantic Scholar
Author	Ramsteiner, Manfred Hao, Hui Ying Kawaharazuka, Atsushi Zhu, Hai Jiang Kästner, Markus Hey, Rudolf Däweritz, L. Grahn, Holger T. Ploog, Klaus H.
Copyright Year	2002
Abstract	The spin injection into GaAs has been studied for the ferromagnetic metal MnAs. Evidence for preferential minority-spin injection is obtained from the circular polarization of the electroluminescence in GaAs/(In,Ga)As light-emitting diodes (LED). The spin-injection efficiency of 6% at the MnAs/GaAs interface is estimated on the basis of spin-relaxation times extracted from time-resolved photoluminescence measurements. This efficiency, as well as the preferential spin orientation, resembles very much the injection behavior found for epitaxial Fe layers. The results do not depend on the azimuthal orientation of the epitaxial MnAs injection layer.
Starting Page	813041
Ending Page	813044
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1103/PhysRevB.66.081304
Alternate Webpage(s)	http://www.pdi-berlin.de/fileadmin/rsync_intra4_www1/externe_Publikationen/2002/prb66mramst_publ0.pdf
Alternate Webpage(s)	https://doi.org/10.1103/PhysRevB.66.081304
Volume Number	66
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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