Hanke, J.-P. ; Freimuth, F. ; Nandy, A. K. ; Zhang, H. ; Blügel, S. ; Mokrousov, Y. (2016)
Role of Berry phase theory for describing orbital magnetism: From magnetic heterostructures to topological orbital ferromagnets.
In: Physical Review B, 94 (12)
doi: 10.1103/PhysRevB.94.121114
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We address the importance of the modern theory of orbital magnetization for spintronics. Based on an all-electron first-principles approach, we demonstrate that the predictive power of the routinely employed "atomcentered" approximation is limited to materials like elemental bulk ferromagnets, while the application of the modern theory of orbital magnetization is crucial in chemically or structurally inhomogeneous systems such as magnetic thin films, and materials exhibiting nontrivial topology in reciprocal and real space, e.g., Chern insulators or noncollinear systems. We find that the modern theory is particularly crucial for describing magnetism in a class of materials that we suggest here-topological orbital ferromagnets.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Hanke, J.-P. ; Freimuth, F. ; Nandy, A. K. ; Zhang, H. ; Blügel, S. ; Mokrousov, Y. |
| Art des Eintrags: | Bibliographie |
| Titel: | Role of Berry phase theory for describing orbital magnetism: From magnetic heterostructures to topological orbital ferromagnets |
| Sprache: | Englisch |
| Publikationsjahr: | 15 September 2016 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 94 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1103/PhysRevB.94.121114 |
| URL / URN: | https://doi.org/10.1103/PhysRevB.94.121114 |
| Kurzbeschreibung (Abstract): | We address the importance of the modern theory of orbital magnetization for spintronics. Based on an all-electron first-principles approach, we demonstrate that the predictive power of the routinely employed "atomcentered" approximation is limited to materials like elemental bulk ferromagnets, while the application of the modern theory of orbital magnetization is crucial in chemically or structurally inhomogeneous systems such as magnetic thin films, and materials exhibiting nontrivial topology in reciprocal and real space, e.g., Chern insulators or noncollinear systems. We find that the modern theory is particularly crucial for describing magnetism in a class of materials that we suggest here-topological orbital ferromagnets. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien |
| Hinterlegungsdatum: | 08 Aug 2017 09:07 |
| Letzte Änderung: | 29 Jan 2019 08:15 |
| PPN: | |
| Sponsoren: | We gratefully acknowledge computing time on the supercomputers JUQUEEN and JURECA at Julich Supercomputing Center as well as at the JARA-HPC cluster of RWTH Aachen, and funding under SPP 1538 of Deutsche Forschungsgemeinschaft (DFG)., H. Z. thanks the LOEWE project RESPONSE funded by the Ministry of Higher Education, Research and the Arts (HMWK) of the Hessen state., A. N. acknowledges financial support from the MAGicSky Horizon 2020 European Research FET Open Project No. 665095. |
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