paper

Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites

arXiv:cond-mat/9905007 · doi:10.1103/PhysRevLett.83.3737

Abstract

We show that the Anomalous Hall Effect (AHE) observed in Colossal Magnetoresistance Manganites is a manifestation of Berry phase effects caused by carrier hopping in a non-trivial spin background. We determine the magnitude and temperature dependence of the Berry phase contribution to the AHE, finding that it increases rapidly in magnitude as the temperature is raised from zero through the magnetic transition temperature T_c, peaks at a temperature and decays as a power of T, in agreement with experimental data. We suggest that our theory may be relevant to the anomalous hall effect in conventional ferromagnets as well.

Discussion of critical behavior revised in light of more accurate numerics of Holm and Janke (now cited as Ref 16). We thank R. Fisch for drawing our attention to this work. Minor aspects of presentation clarified and references slighly modified

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