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Title: Anomalous Hall effect in the van der Waals bonded ferromagnet Fe 3 - x GeTe 2

Abstract

Here, we report the anomalous Hall effect (AHE) in single crystals of a quasi-two-dimensional Fe 3–xGeTe 2 (x ≈ 0.36) ferromagnet grown by the flux method which induces defects on the Fe site and bad metallic resistivity. Fe K-edge x-ray absorption spectroscopy was measured to provide information on the local atomic environment in such crystals. The dc and ac magnetic susceptibility measurements indicate a second-stage transition below 119 K in addition to the paramagnetic to ferromagnetic transition at 153 K. A linear scaling behavior between the modified anomalous Hall resistivity ρxy/μ0Heff and longitudinal resistivity ρ 2 xxM/μ 0H eff implies that the AHE in Fe 3–xGeTe 2 should be dominated by the intrinsic Karplus-Luttinger mechanism rather than the extrinsic skew-scattering and side-jump mechanisms. The observed deviation in the linear- M Hall conductivity σ A xy below 30 K is in line with its transport characteristic at low temperatures, implying the scattering of conduction electrons due to magnetic disorder and the evolution of the Fermi surface induced by a possible spin-reorientation transition.

Authors:
 [1];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1440350
Alternate Identifier(s):
OSTI ID: 1432424
Report Number(s):
BNL-205728-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 16; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Liu, Yu, Stavitski, Eli, Attenkofer, Klaus, and Petrovic, Cedomir. Anomalous Hall effect in the van der Waals bonded ferromagnet Fe3-xGeTe2. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.165415.
Liu, Yu, Stavitski, Eli, Attenkofer, Klaus, & Petrovic, Cedomir. Anomalous Hall effect in the van der Waals bonded ferromagnet Fe3-xGeTe2. United States. doi:10.1103/PhysRevB.97.165415.
Liu, Yu, Stavitski, Eli, Attenkofer, Klaus, and Petrovic, Cedomir. Mon . "Anomalous Hall effect in the van der Waals bonded ferromagnet Fe3-xGeTe2". United States. doi:10.1103/PhysRevB.97.165415.
@article{osti_1440350,
title = {Anomalous Hall effect in the van der Waals bonded ferromagnet Fe3-xGeTe2},
author = {Liu, Yu and Stavitski, Eli and Attenkofer, Klaus and Petrovic, Cedomir},
abstractNote = {Here, we report the anomalous Hall effect (AHE) in single crystals of a quasi-two-dimensional Fe3–xGeTe2 (x ≈ 0.36) ferromagnet grown by the flux method which induces defects on the Fe site and bad metallic resistivity. Fe K-edge x-ray absorption spectroscopy was measured to provide information on the local atomic environment in such crystals. The dc and ac magnetic susceptibility measurements indicate a second-stage transition below 119 K in addition to the paramagnetic to ferromagnetic transition at 153 K. A linear scaling behavior between the modified anomalous Hall resistivity ρxy/μ0Heff and longitudinal resistivity ρ2xxM/μ0Heff implies that the AHE in Fe3–xGeTe2 should be dominated by the intrinsic Karplus-Luttinger mechanism rather than the extrinsic skew-scattering and side-jump mechanisms. The observed deviation in the linear-M Hall conductivity σAxy below 30 K is in line with its transport characteristic at low temperatures, implying the scattering of conduction electrons due to magnetic disorder and the evolution of the Fermi surface induced by a possible spin-reorientation transition.},
doi = {10.1103/PhysRevB.97.165415},
journal = {Physical Review B},
number = 16,
volume = 97,
place = {United States},
year = {Mon Apr 09 00:00:00 EDT 2018},
month = {Mon Apr 09 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
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