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Authors: Dong, Bo-Wen
Cramer, Joel
Ganzhorn, Kathrin
Yuan, H. Y.
Guo, Er-Jia
Goennenwein, Sebastian T. B.
Kläui, Mathias
Title: Spin Hall magnetoresistance in the non-collinear ferrimagnet GdIG close to the compensation temperature
Online publication date: 20-Aug-2019
Year of first publication: 2018
Language: english
Abstract: We investigate the spin Hall magnetoresistance (SMR) in a gadolinium iron garnet (GdIG)/platinum (Pt) heterostructure by angular dependent magnetoresistance measurements. The magnetic structure of the ferromagnetic insulator GdIG is non-collinear near the compensation temperature, while it is collinear far from the compensation temperature. In the collinear regime, the SMR signal in GdIG is consistent with the usual sin(2)theta relation well established in the collinear magnet yttrium iron garnet, with theta the angle between magnetization and spin Hall spin polarization direction. In the non-collinear regime, both an SMR signal with inverted sign and a more complex angular dependence with four maxima are observed within one sweep cycle. The number of maxima as well as the relative strength of different maxima depend strongly on temperature and field strength. Our results evidence a complex SMR behavior in the non-collinear magnetic regime that goes beyond the conventional formalism developed for collinear magnetic structures.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-591977
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: In Copyright
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Journal: Journal of physics : condensed matter
Pages or article number: Art. 035802
Publisher: IOP Publ.
Publisher place: Bristol
Issue date: 2018
ISSN: 0953-8984
Publisher URL:
Publisher DOI: 10.1088/1361-648X/aa9e26
Appears in collections:JGU-Publikationen

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