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Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully compensated half-metallic Mn2RuxGa thin films
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Fowley, Ciarán, Rode, Karsten, Lau, Yong-Chang, Thiyagarajah, Naganivetha, Betto, Davide, Borisov, Kiril, Atcheson, Gwenaël, Kampert, Erik, Wang, Zhaosheng, Yuan, Ye, Zhou, Shengqiang, Lindner, Jürgen, Stamenov, Plamen, Coey, J. M. D. and Deac, Alina Maria (2018) Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully compensated half-metallic Mn2RuxGa thin films. Physical Review B (Condensed Matter and Materials Physics), 98 (22). doi:10.1103/PhysRevB.98.220406 ISSN 1098-0121.
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WRAP-magnetocrystalline-anisotropy-exchange-probed-high-field-anomalous-Hall-effect-fully-compensated-half-metallic-Mn2RuxGa-thin-films-Kampert-2018.pdf - Accepted Version - Requires a PDF viewer. Download (3363Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.98.220406
Abstract
Magnetotransport is investigated in thin films of the half-metallic ferrimagnet Mn2RuxGa in pulsed magnetic fields of up to 58T. A non-vanishing Hall signal is observed over a broad temperature range, spanning the compensation temperature (155K), where the net magnetic moment is strictly zero, the anomalous Hall conductivity is 6673Ω−1 m−1 and the coercivity exceeds 9T. Molecular field modelling is used to determine the intra- and inter-sublattice exchange constants and from the spin-flop transition we infer the anisotropy of the electrically active sublattice to be 216kJm−3 and predict the magnetic resonances frequencies. Exchange and anisotropy are comparable and hard-axis applied magnetic fields result in a tilting of the magnetic moments from their collinear ground state. Our analysis is applicable to collinear ferrimagnetic half-metal systems.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Thin films , Hall effect | ||||||||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||||||||
Publisher: | American Physical Society | ||||||||||||
ISSN: | 1098-0121 | ||||||||||||
Official Date: | 12 December 2018 | ||||||||||||
Dates: |
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Volume: | 98 | ||||||||||||
Number: | 22 | ||||||||||||
DOI: | 10.1103/PhysRevB.98.220406 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Reuse Statement (publisher, data, author rights): | ©2018 American Physical Society | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 12 December 2018 | ||||||||||||
Date of first compliant Open Access: | 14 December 2018 | ||||||||||||
RIOXX Funder/Project Grant: |
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