Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe{1.3}Sb.
Phys Rev Lett
; 108(5): 056601, 2012 Feb 03.
Article
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| MEDLINE
| ID: mdl-22400946
We report on a topological Hall effect possibly induced by scalar spin chirality in a quasi-two-dimensional helimagnet Fe{1+δ}Sb. In the low-temperature region where the spins on interstitial-Fe (concentration δâ¼0.3) intervening the 120° spin-ordered triangular planes tend to freeze, a nontrivial 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.
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MEDLINE
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Revista:
Phys Rev Lett
Año:
2012
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Article
País de afiliación:
Japón
Pais de publicación:
Estados Unidos