Evidence for Rashba magnetism in ultrathin ferromagnet–heavy metal bilayers
The interplay of Rashba spin-orbit coupling and magnetism in ultrathin ferromagnet--heavy metal bilayers is crucial for advancing spintronics, but remains challenging to elucidate. This Letter identifies distinct temperature- and bias-dependent magnetic phenomena near the Curie temperature, driven by the competition between exchange interactions and interfacial Rashba effects. Utilizing the anomalous Hall effect and magneto-optical measurements, the authors demonstrate the emergence of Rashba magnetism, a state with unique magnetic and electronic properties. These findings yield pathways to optimizing interfacial spin-orbit phenomena for efficient spin-orbitronic devices.
Authors
- V. E. Demidov (ORCID: https://orcid.org/0000-0002-7840-5679)
- Joshua Peacock (ORCID: https://orcid.org/0000-0003-1344-9686)
- Guanxiong Chen
- S. O. Demokritov (ORCID: https://orcid.org/0000-0003-4422-4201)
- Björn Wehinger (ORCID: https://orcid.org/0000-0002-7089-595X)
- N. B. Brookes (ORCID: https://orcid.org/0000-0002-1342-9530)
- J. W. Freeland (ORCID: https://orcid.org/0000-0003-4814-5308)
- Yiou Zhang (ORCID: https://orcid.org/0000-0003-0043-3159)
- Sergei Urazhdin (ORCID: https://orcid.org/0000-0002-6972-0300)
- Sergei Ivanov (ORCID: https://orcid.org/0000-0001-9594-6381)
Institutions
- Argonne National Laboratory (US)
- Emory University (US)
- University of Münster (DE)
- European Synchrotron Radiation Facility (FR)
- Advanced Photonix (United States) (US)
- Advanced Photon Source
Publication Details
- Journal
- Physical Review Applied
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1103/physrevapplied.22.l061002
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 0.00