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Authors: Ding, Shilei
Ross, Andrew
Lebrun, Romain
Becker, Sven
Lee, Kyujoon
Boventer, Isabella
Das, Souvik
Kurokawa, Yuichiro
Gupta, Shruti
Yang, Jinbo
Jakob, Gerhard
Kläui, Mathias
Title: Interfacial Dzyaloshinskii-Moriya interaction and chiral magnetic textures in a ferrimagnetic insulator
Online publication date: 27-Nov-2019
Language: english
Abstract: The interfacial Dzyaloshinskii-Moriya interaction (DMI) in multilayers of heavy metal and ferromagnetic metals enables the stabilization of novel chiral spin structures such as skyrmions. Magnetic insulators, on the other hand, can exhibit enhanced dynamics and properties such as lower magnetic damping and therefore it is of interest to combine the properties enabled by interfacial DMI with insulating systems. Here, we demonstrate the presence of interfacial DMI in heterostructures that include insulating magnetic layers. We use perpendicularly magnetized insulating thulium iron garnet (TmIG) films capped by the heavy metal platinum, grown on gadolinium gallium garnet (GGG) substrates, and find a surprisingly strong interfacial DMI that, combined with spin-orbit torque, results in efficient switching. The interfacial origin is confirmed through thickness-dependence measurements of the DMI, revealing the characteristic 1/thickness dependence. We combine chiral spin structures and spin-orbit torques for efficient switching and identify skyrmions that allow us to establish the GGG/TmIG interface as the possible origin of the DMI.
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-594346
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
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Journal: Physical review : B
Pages or article number: Art. 100406
Publisher: APS
Publisher place: College Park, Md.
Issue date: 2019
ISSN: 2469-9969
Publisher URL:
Publisher DOI: 10.1103/PhysRevB.100.100406
Appears in collections:JGU-Publikationen

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