Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets
| Autor: | Lukasz Plucinski, Daniel Wortmann, Yuriy Mokrousov, Jan-Philipp Hanke, Gustav Bihlmayer, Stefan Blügel, Hongbin Zhang, Chengwang Niu, Patrick M. Buhl |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Electronic properties and materials Magnetism Science FOS: Physical sciences General Physics and Astronomy Position and momentum space 02 engineering and technology Topology Article General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Magnetization Magnetic properties and materials Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Topological insulators lcsh:Science Physics Condensed Matter - Materials Science Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Materials Science (cond-mat.mtrl-sci) General Chemistry Fermion 021001 nanoscience & nanotechnology Semimetal 030104 developmental biology Domain wall (magnetism) Ferromagnetism Topological insulator lcsh:Q Condensed Matter::Strongly Correlated Electrons ddc:500 0210 nano-technology |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019) Nature Communications Nature Communications 10(1), 3179 (2019). doi:10.1038/s41467-019-10930-6 |
| ISSN: | 2041-1723 |
| Popis: | The concepts of Weyl fermions and topological semimetals emerging in three-dimensional momentum space are extensively explored owing to the vast variety of exotic properties that they give rise to. On the other hand, very little is known about semimetallic states emerging in two-dimensional magnetic materials, which present the foundation for both present and future information technology. Here, we demonstrate that including the magnetization direction into the topological analysis allows for a natural classification of topological semimetallic states that manifest in two-dimensional ferromagnets as a result of the interplay between spin-orbit and exchange interactions. We explore the emergence and stability of such mixed topological semimetals in realistic materials, and point out the perspectives of mixed topological states for current-induced orbital magnetism and current-induced domain wall motion. Our findings pave the way to understanding, engineering and utilizing topological semimetallic states in two-dimensional spin-orbit ferromagnets. Whether topological semimetal states can emerge in two-dimensional magnetic materials remains less understood. Here, Niu and Hanke et al. propose the concepts of mixed Weyl and nodal-line semimetallic phases by including the magnetization direction into the topological analysis in two-dimensional ferromagnets. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|