Prototypical topological orbital ferromagnet γ-FeMn
Hanke JP, Freimuth F, Bluegel S, Mokrousov Y (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 7
Article Number: 41078
DOI: 10.1038/srep41078
Abstract
We predict from first principles an entirely topological orbital magnetization in the noncoplanar bulk antiferromagnet γ-FeMn originating in the nontrivial topology of the underlying spin structure, without any reference to spin-orbit interaction. Studying the influence of strain, composition ratio, and spin texture on the topological orbital magnetization and the accompanying topological Hall effect, we promote the scalar spin chirality as key mechanism lifting the orbital degeneracy. The system is thus a prototypical topological orbital ferromagnet, the macroscopic orbital magnetization of which is prominent even without spin-orbit coupling. One of the remarkable features of γ-FeMn is the possibility for pronounced orbital magnetostriction mediated by the complex spin topology in real space.
Involved external institutions
Germany (DE)How to cite
APA:
Hanke, J.-P., Freimuth, F., Bluegel, S., & Mokrousov, Y. (2017). Prototypical topological orbital ferromagnet γ-FeMn. Scientific Reports, 7. https://doi.org/10.1038/srep41078
MLA:
Hanke, Jan-Philipp, et al. "Prototypical topological orbital ferromagnet γ-FeMn." Scientific Reports 7 (2017).
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