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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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[Veröffentlichungen] [Patente] [Graduierungsarbeiten] [Berichte] [Poster]
Abstract

K. Pappert, C. Gould, M. Sawicki, J. Wenisch, K. Brunner, G. Schmidt, L.W. Molenkamp
Detailed transport investigation of the magnetic anisotropy of (Ga, Mn)As
New Journal of Physics 9 (2015-02-24 13:53:01), 354

This paper discusses transport methods for the investigation of the (Ga,Mn)As magnetic anisotropy. Typical magnetoresistance behaviour for different anisotropy types is discussed, focusing on an in depth discussion of the anisotropy fingerprint technique and extending it to layers with primarily uniaxial magnetic anisotropy. We find that in all (Ga,Mn)As films studied, three anisotropy components are always present. The primary biaxial along ([100] and [010]) along with both uniaxial components along the [\overline{1}10] and [010] crystal directions which are often reported separately. Various fingerprints of typical (Ga,Mn)As transport samples at 4?K are included to illustrate the variation of the relative strength of these anisotropy terms. We further investigate the temperature dependence of the magnetic anisotropy and the domain wall nucleation energy with the help of the fingerprint method.

http://iopscience.iop.org/1367-2630/9/9/354/
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