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Institut f. Physik
FG Nanostrukturierte Materialien
Martin-Luther-Universitat
Halle-Wittenberg
Von-Danckelmann-Platz 3,
D-06120 Halle, Germany

Tel.:  +49 345 55 25321
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Abstract

L. Hansen, D. Ferrand, G. Richter, M. Thierley, V. Hock, N. Schwarz, G. Reuscher, G. Schmidt, A. Waag, L.W. Molenkamp
Epitaxy and magneto-transport properties of the diluted magnetic semiconductor p-Be(1-x)Mn(x)Te
Appl. Phys. Lett. 79 (2015-02-24 16:42:27), 3125-3127

We report on the molecular-beam epitaxialgrowth and magnetotransportproperties of p-type BeMnTe, a ferromagnetic diluted magnetic semiconductor. BeMnTe thin-filmstructures can be grown almost lattice matched to GaAs for Mn concentrations up to 10%. A high p-type doping with nitrogen can be achieved by using a rf plasma source. BeMnTe and BeTe layers have been characterized by magnetotransport measurements. At low temperatures, the BeMnTe samples exhibit a large anomalous Hall effect. A hysteresis in the anomalous Hall effect appears below 2.5 K in the most heavily doped sample, which indicates the occurrence of a ferromagnetic phase.

http://scitation.aip.org/content/aip/journal/apl/79/19/10.1063/1.1416160
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