Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-120
Authors: Hajiri, T.
Baldrati, Lorenzo
Lebrun, Romain
Filianina, Mariia
Ross, Andrew
Tanahashi, N.
Kuroda, M.
Gan, W. L.
Menteş, T. O.
Genuzio, F.
Locatelli, A.
Asano, H.
Kläui, Mathias
Title: Spin structure and spin Hall magnetoresistance of epitaxial thin films of the insulating non-collinear antiferromagnet SmFeO3
Online publication date: 4-Sep-2019
Language: english
Abstract: We report a combined study of imaging the antiferromagnetic (AFM) spin structure and measuring the spin Hall magnetoresistance (SMR) in epitaxial thin films of the insulating non-collinear antiferromagnet SmFeO3. X-ray magnetic linear dichroism photoemission electron microscopy measurements reveal that the AFM spins of the SmFeO3(1 1 0) align in the plane of the film. Angularly dependent magnetoresistance measurements show that SmFeO3/Ta bilayers exhibit a positive SMR, in contrast to the negative SMR expected in previously studied collinear AFMs. The SMR amplitude increases linearly with increasing external magnetic field at higher magnetic fields, suggesting that field-induced canting of the AFM spins plays an important role. In contrast, around the coercive field, no detectable SMR signal is observed, indicating that the SMR of the AFM and canting magnetization components cancel out. Below 50 K, the SMR amplitude increases sizably by a factor of two as compared to room temperature, which likely correlates with the long-range ordering of the Sm ions. Our results show that the SMR is a sensitive technique for non-equilibrium spin systems of non-collinear AFMs.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
DOI: http://doi.org/10.25358/openscience-120
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
Information on rights of use: https://rightsstatements.org/vocab/InC/1.0/
Journal: Journal of physics : condensed matter
31
44
Pages or article number: Art. 445804
Publisher: IOP Publ.
Publisher place: Bristol
Issue date: 2019
ISSN: 1361-648X
0953-8984
Publisher's URL: http://dx.doi.org/10.1088/1361-648X/ab303c
Appears in collections:JGU-Publikationen

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