Anisotropic magnetoresistance contribution to measured domain wall   resistances of in-plane magnetised (Ga,Mn)As
  We demonstrate the presence of an important anisotropic magnetoresistance contribution to the domain wall resistance recently measured in thin-film (Ga,Mn)As with in-plane magnetic anisotropy. Analytic results for simple domain wall orientations supplemented by numerical results for more general cases show this previously omitted contribution can largely explain the observed negative resistance. 
H.G. Roberts, S. Crampin, and S.J. Bending