Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-194
Authors: | Baldrati, Lorenzo Ross, Andrew Niizeki, T. Schneider, Christoph Ramos, R. Cramer, Joel Gomonay, Olena Filianina, Mariia Savchenko, T. Heinze, Daniel Kleibert, A. Saitoh, E. Sinova, Jairo Kläui, Mathias |
Title: | Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films |
Online publication date: | 20-Aug-2019 |
Year of first publication: | 2018 |
Language: | english |
Abstract: | We report the observation of the three-dimensional angular dependence of the spin Hall magnetoresistance (SMR) in a bilayer of the epitaxial antiferromagnetic insulator NiO(001) and the heavy metal Pt, without any ferromagnetic element. The detected angular-dependent longitudinal and transverse magnetoresistances are measured by rotating the sample in magnetic fields up to 11 T, along three orthogonal planes (xy-, yz-, and xz-rotation planes, where the z axis is orthogonal to the sample plane). The total magnetoresistance has contributions arising from both the SMR and ordinary magnetoresistance. The onset of the SMR signal occurs between 1 and 3 T and no saturation is visible up to 11 T. The three-dimensional angular dependence of the SMR can be explained by a model considering the reversible field-induced redistribution of magnetostrictive antiferromagnetic S and T domains in the NiO(001), stemming from the competition between the Zeeman energy and the elastic clamping effect of the nonmagnetic MgO substrate. From the observed SMR ratio, we estimate the spin mixing conductance at the NiO/Pt interface to be greater than 2×1014Ω−1m−2. Our results demonstrate the possibility to electrically detect the Néel vector direction in stable NiO(001) thin films, for rotations in the xy and xz planes. Moreover, we show that a careful subtraction of the ordinary magnetoresistance contribution is crucial to correctly estimate the amplitude of the SMR. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-194 |
URN: | urn:nbn:de:hebis:77-publ-591884 |
Version: | Accepted version |
Publication type: | Zeitschriftenaufsatz |
License: | In Copyright |
Information on rights of use: | https://rightsstatements.org/vocab/InC/1.0/ |
Journal: | Physical review : B 98 2 |
Pages or article number: | Art. 024422 |
Publisher: | APS |
Publisher place: | College Park, Md. |
Issue date: | 2018 |
ISSN: | 2469-9969 1095-3795 |
Publisher URL: | http://dx.doi.org/10.1103/PhysRevB.98.024422 |
Publisher DOI: | 10.1103/PhysRevB.98.024422 |
Appears in collections: | JGU-Publikationen |