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

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

2006-11-06

arxiv.org/abs/cond-mat/0611156v1

Appl. Phys. Lett 90, 062109 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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Scientific paper

10.1088/1367-2630/9/9/354

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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