Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe 1.3Sb

Y. Shiomi*, M. Mochizuki, Y. Kaneko, Y. Tokura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


We report on a topological Hall effect possibly induced by scalar spin chirality in a quasi-two-dimensional helimagnet Fe 1+δSb. In the low-temperature region where the spins on interstitial-Fe (concentration δ∼0.3) 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.

Original languageEnglish
Article number056601
JournalPhysical Review Letters
Issue number5
Publication statusPublished - 2012 Jan 30
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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