Anisotropic anomalous Hall effect of topological origin in carrier-doped FeCr2S4

Kenya Ohgushi; Shigeki Miyasaka; Yoshinori Tokura

doi:10.1143/JPSJ.75.013710

Anisotropic anomalous Hall effect of topological origin in carrier-doped FeCr₂S₄

Kenya Ohgushi, Shigeki Miyasaka, Yoshinori Tokura

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

9 Citations (Scopus)

Abstract

The anomalous Hall effect (AHE) was investigated for a single crystal of 6% Ag-doped FeCr₂S₄ with the rotation of the magnetic field (H) within the yz plane (the current along x̂, the Hall voltage along ŷ). We observed a clear deviation from the cos θ dependence (θ being the angle between H and ẑ), which indicates the presence of an anisotropic AHE. We analyzed a tight-binding model of the diamond lattice with the Dzyaloshinskii-Moriya interaction and reproduced the characteristic experimentally observed features. The quantum topology nature of the AHE is revealed in this compound.

Original language	English
Article number	013710
Journal	journal of the physical society of japan
Volume	75
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.75.013710
Publication status	Published - 2006 Jan 1
Externally published	Yes

Keywords

Anomalous Hall effect
Dzyaloshinskii-Moriya interaction
FeCrS
Galvanomagnetic effect
Parity anomaly

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.75.013710

Cite this

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title = "Anisotropic anomalous Hall effect of topological origin in carrier-doped FeCr2S4",

abstract = "The anomalous Hall effect (AHE) was investigated for a single crystal of 6% Ag-doped FeCr2S4 with the rotation of the magnetic field (H) within the yz plane (the current along {\^x}, the Hall voltage along ŷ). We observed a clear deviation from the cos θ dependence (θ being the angle between H and ẑ), which indicates the presence of an anisotropic AHE. We analyzed a tight-binding model of the diamond lattice with the Dzyaloshinskii-Moriya interaction and reproduced the characteristic experimentally observed features. The quantum topology nature of the AHE is revealed in this compound.",

keywords = "Anomalous Hall effect, Dzyaloshinskii-Moriya interaction, FeCrS, Galvanomagnetic effect, Parity anomaly",

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AU - Ohgushi, Kenya

AU - Miyasaka, Shigeki

AU - Tokura, Yoshinori

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N2 - The anomalous Hall effect (AHE) was investigated for a single crystal of 6% Ag-doped FeCr2S4 with the rotation of the magnetic field (H) within the yz plane (the current along x̂, the Hall voltage along ŷ). We observed a clear deviation from the cos θ dependence (θ being the angle between H and ẑ), which indicates the presence of an anisotropic AHE. We analyzed a tight-binding model of the diamond lattice with the Dzyaloshinskii-Moriya interaction and reproduced the characteristic experimentally observed features. The quantum topology nature of the AHE is revealed in this compound.

AB - The anomalous Hall effect (AHE) was investigated for a single crystal of 6% Ag-doped FeCr2S4 with the rotation of the magnetic field (H) within the yz plane (the current along x̂, the Hall voltage along ŷ). We observed a clear deviation from the cos θ dependence (θ being the angle between H and ẑ), which indicates the presence of an anisotropic AHE. We analyzed a tight-binding model of the diamond lattice with the Dzyaloshinskii-Moriya interaction and reproduced the characteristic experimentally observed features. The quantum topology nature of the AHE is revealed in this compound.

KW - Anomalous Hall effect

KW - Dzyaloshinskii-Moriya interaction

KW - FeCrS

KW - Galvanomagnetic effect

KW - Parity anomaly

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