Origin of multiple skyrmion phases in EuAl4
, and elucidate the electronic origins of its rich magnetic orders. We directly observe an x-dependent Lifshitz transition leading to the emergence of a Fermi-surface pocket. Importantly, multiple nesting vectors derived from this pocket match the symmetries and periodicities of the multiple SkLs. Moreover, these nesting vectors can also account for other magnetic orders, such as the zero-field helical magnetism, suggesting a common electronic origin of the complex magnetic phases. These findings suggest that competing nesting-induced Ruderman-Kittel-Kasuya-Yosida interactions and their engineering can generate and control various SkLs and related topological spin textures.
Authors
- S. Souma (ORCID: https://orcid.org/0000-0003-2460-4602)
- Kouji Segawa (ORCID: https://orcid.org/0000-0002-3633-4809)
- H. Kumigashira
- T. Sato (ORCID: https://orcid.org/0000-0002-4544-5463)
- K. Nakayama (ORCID: https://orcid.org/0000-0003-2462-2253)
- Asuka Honma (ORCID: https://orcid.org/0009-0000-5972-209X)
- Daisuke Shiga (ORCID: https://orcid.org/0000-0003-4500-6214)
- Yuki Arai (ORCID: https://orcid.org/0000-0002-3337-1073)
- Takashi Takahashi
Institutions
- Kyoto Sangyo University (JP)
- Tohoku University (JP)
- Spintronics Research Network of Japan (JP)
Publication Details
- Journal
- Nature Communications
- Published
- 2026-04-13
- DOI
- https://doi.org/10.1038/s41467-026-71020-y
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Society for the Promotion of Science
- Core Research for Evolutional Science and Technology