Abstract
The anomalous Hall effect due to the spin chirality order and fluctuation is studied theoretically in a Kondo lattice model without the relativistic spin-orbit interaction. Even without the correlations of the localized spins, can emerge depending on the lattice structure and the spin anisotropy. We reveal the condition for this chirality-fluctuation driven mechanism for . Our semiquantitative estimates for a pyrochlore oxide give a finite together with a high resistivity , in agreement with experiments.
- Received 30 September 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.196602
©2003 American Physical Society