TITLE

Ferromagnetism and coupling between charge carriers and magnetization at room temperature in Ge/MnAs multilayers

AUTHOR(S)
Lee, J. J.; Cui, Y.; Song, J. H.; Freeman, A. J.; Ketterson, J. B.; Cho, S. L.
PUB. DATE
October 2004
SOURCE
Applied Physics Letters;10/11/2004, Vol. 85 Issue 15, p3169
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ge/MnAs multilayers are grown on (001) GaAs substrates by molecular-beam epitaxy. All samples investigated showed strong anomalous Hall effects at room temperature with p-type conductivity and temperature-dependent hysteresis loops in the magnetization. Ge/MnAs multilayers also revealed an in-plane magnetic easy axis and a vanishingly small in-plane magnetic anisotropy. These results are in sharp contrast to MnAs/GaAs digital alloys, where the reported Curie temperatures are at or below 50 K, and demonstrate the potential of germanium-based spintronic devices.
ACCESSION #
14909478

 

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