Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-5698
Authors: | Meer, Hendrik Schreiber, Felix Schmitt, Christin Ramos, Rafael Saitoh, Eiji Gomonay, Olena Sinova, Jairo Baldrati, Lorenzo Kläui, Mathias |
Title: | Direct imaging of current-induced antiferromagnetic switching revealing a pure thermomagnetoelastic switching mechanism in NiO |
Online publication date: | 4-Feb-2022 |
Year of first publication: | 2020 |
Language: | english |
Abstract: | We unravel the origin of current-induced magnetic switching of insulating antiferromagnet/heavy metal systems. We utilize concurrent transport and magneto-optical measurements to image the switching of antiferromagnetic domains in specially engineered devices of NiO/Pt bilayers. Different electrical pulsing and device geometries reveal different final states of the switching with respect to the current direction. We can explain these through simulations of the temperature-induced strain, and we identify the thermomagnetoelastic switching mechanism combined with thermal excitations as the origin, in which the final state is defined by the strain distributions and heat is required to switch the antiferromagnetic domains. We show that such a potentially very versatile noncontact mechanism can explain the previously reported contradicting observations of the switching final state, which were attributed to spin-orbit torque mechanisms. |
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-5698 |
Version: | Accepted version |
Publication type: | Zeitschriftenaufsatz |
Document type specification: | Scientific article |
License: | In Copyright |
Information on rights of use: | http://rightsstatements.org/vocab/InC/1.0/ |
Journal: | Nano letters 21 1 |
Pages or article number: | 114 119 |
Publisher: | ACS Publ. |
Publisher place: | Washington, DC |
Issue date: | 2021 |
ISSN: | 1530-6984 |
Publisher URL: | https://doi.org/10.1021/acs.nanolett.0c03367 |
Publisher DOI: | 10.1021/acs.nanolett.0c03367 |
Appears in collections: | JGU-Publikationen |
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