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Transport Characterization of the Magnetic Anisotropy of (Ga,Mn)As

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arxiv cond-mat/0611156 v1 pith:IQNJAGAV submitted 2006-11-06 cond-mat.mes-hall

K. Pappert , S. Hümpfner , J. Wenisch , K. Brunner , C. Gould , G. Schmidt , L.W. Molenkamp This is my paper · ORCID
classification cond-mat.mes-hall
keywords anisotropymagneticcomponentstransportmethodrevealattractedcharacterization
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The rich magnetic anisotropy of compressively strained (Ga,Mn)As has attracted great interest recently. Here we discuss a sensitive method to visualize and quantify the individual components of the magnetic anisotropy using transport. A set of high resolution transport measurements is compiled into color coded resistance polar plots, which constitute a fingerprint of the symmetry components of the anisotropy. As a demonstration of the sensitivity of the method, we show that these typically reveal the presence of both the [-110] and the [010] uniaxial magnetic anisotropy component in (Ga,Mn)As layers, even when most other techniques reveal only one of these components.

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