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

Y. Shiomi, Masahito Mochizuki, Y. Kaneko, Y. Tokura

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Abstract

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
Volume108
Issue number5
DOIs
Publication statusPublished - 2012 Jan 30
Externally publishedYes

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chirality
Hall effect
interstitials
scalars
modulation
electrical resistivity
magnetic fields
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe 1.3Sb. / Shiomi, Y.; Mochizuki, Masahito; Kaneko, Y.; Tokura, Y.

In: Physical Review Letters, Vol. 108, No. 5, 056601, 30.01.2012.

Research output: Contribution to journalArticle

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