Transport characterization of the magnetic anisotropy of (Ga,Mn)As

This is the authors' abstract. We don't add key points for this paper.

The rich magnetic anisotropy of compressively strained (Ga,Mn)As has attracted great interest recently. Here the authors 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, they show that these typically reveal the presence of both the [1¯10] and the [010] uniaxial magnetic anisotropy component in (Ga,Mn)As layers, even when most other techniques reveal only one of these components.