Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe1.3Sb
Strongly Correlated Electrons
2015-05-30 v1
Abstract
We report on a topological Hall effect possibly induced by scalar spin chirality in a quasi-two- dimensional helimagnet FeSb. In the low-temperature region where the spins on interstitial- Fe (concentration ) intervening the spin-ordered triangular planes tend to freeze, a non-trivial component of Hall resistivity with opposite sign of the conventional anomalous Hall term is observed under magnetic field applied perpendicular to the triangular-lattice plane. The observed unconventional Hall effect is ascribed to the scalar spin chirality arising from the heptamer spin-clusters around the interstitial-Fe sites, which can be induced by the spin modulation by the Dzyaloshinsky-Moriya interaction.
Keywords
Cite
@article{arxiv.1110.5554,
title = {Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe1.3Sb},
author = {Y. Shiomi and M. Mochizuki and Y. Kaneko and Y. Tokura},
journal= {arXiv preprint arXiv:1110.5554},
year = {2015}
}