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

Y. Shiomi; M. Mochizuki; Y. Kaneko; Y. Tokura

doi:10.1103/PhysRevLett.108.056601

Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe _1.3Sb

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

Materials Property Division

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

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 language	English
Article number	056601
Journal	Physical review letters
Volume	108
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.108.056601
Publication status	Published - 2012 Jan 30

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.108.056601

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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.",

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AU - Shiomi, Y.

AU - Mochizuki, M.

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AU - Tokura, Y.

PY - 2012/1/30

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N2 - 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.

AB - 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.

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Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe _1.3Sb

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