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http://doi.org/10.25358/openscience-236| 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 |
| Year of first publication: | 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 |
| ROR: | https://ror.org/023b0x485 |
| DOI: | http://doi.org/10.25358/openscience-236 |
| URN: | urn:nbn:de:hebis:77-publ-594346 |
| 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 100 10 |
| Pages or article number: | Art. 100406 |
| Publisher: | APS |
| Publisher place: | College Park, Md. |
| Issue date: | 2019 |
| ISSN: | 2469-9969 1095-3795 |
| Publisher URL: | http://dx.doi.org/10.1103/PhysRevB.100.100406 |
| Publisher DOI: | 10.1103/PhysRevB.100.100406 |
| Appears in collections: | JGU-Publikationen |
