Anisotropic magnetoresistance and anomalous Hall effect in manganite thin films

We report on anisotropic magnetoresistance (AMR) and Hall effect measurements along the and [001] directions in a (110)-oriented La 2/3 Ca 1/3 MnO 3 thin film. While the electrical resistivity and the ordinary Hall coefficient are smaller for I along [001], evidencing some anisotropy of the Fermi surface, both the AMR and the anomalous Hall coefficient are larger when the current is applied along . Since these two phenomena originate from spin–orbit coupling effects, we state that our results support an anisotropy of the spin–orbit interaction in manganites. The possible origin of this anisotropy is discussed.