2002/11/15 by Gen Tatara, Hikaru Kawamura · 5 citations
Physics and Astronomy · #Theoretical and Computational Physics #Magnetic properties of thin films #Topological Materials and Phenomena
paper · doi:10.1143/jpsj.71.2613
Anomalous Hall effect arising from non-trivial spin configuration (chirality) is studied based on the s-d model. Considering a weak coupling case, the interaction is treated perturbatively. Scattering by normal impurities is included. Chirality is shown to drive locally Hall current and leads to overall Hall effect if there is a finite uniform chirality. This contribution is independent of the conventional spin-orbit contribution and shows distinct low temperature behavior. In mesoscopic spin glasses, chirality-induced anomalous Hall effect is expected below the spin-glass transition temperature. Measurement of Hall coefficient would be useful in experimentally confirming the chirality ordering.