English

Chirality driven anomalous Hall effect in weak coupling regime

Mesoscale and Nanoscale Physics 2009-11-07 v1

Abstract

Anomalous Hall effect arising from non-trivial spin configuration (chirality) is studied based on the ss-dd 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.

Keywords

Cite

@article{arxiv.cond-mat/0204096,
  title  = {Chirality driven anomalous Hall effect in weak coupling regime},
  author = {Gen Tatara and Hikaru Kawamura},
  journal= {arXiv preprint arXiv:cond-mat/0204096},
  year   = {2009}
}