This title appears in the Scientific Report :
2016
Please use the identifier:
http://hdl.handle.net/2128/13340 in citations.
Please use the identifier: http://dx.doi.org/10.1038/ncomms13613 in citations.
Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
When electrons are driven through unconventional magnetic structures, such as skyrmions, they experience emergent electromagnetic fields that originate several Hall effects. Independently, ground-state emergent magnetic fields can also lead to orbital magnetism, even without the spin–orbit interacti...
Saved in:
Personal Name(s): | dos Santos Dias, Manuel (Corresponding author) |
---|---|
Bouaziz, Juba / Bouhassoune, Mohammed / Blügel, Stefan / Lounis, Samir | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Nature Communications, 7 (2016) S. 13613 |
Imprint: |
London
Nature Publishing Group
2016
|
PubMed ID: |
27995909 |
DOI: |
10.1038/ncomms13613 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/ncomms13613 in citations.
When electrons are driven through unconventional magnetic structures, such as skyrmions, they experience emergent electromagnetic fields that originate several Hall effects. Independently, ground-state emergent magnetic fields can also lead to orbital magnetism, even without the spin–orbit interaction. The close parallel between the geometric theories of the Hall effects and of the orbital magnetization raises the question: does a skyrmion display topological orbital magnetism? Here we first address the smallest systems with nonvanishing emergent magnetic field, trimers, characterizing the orbital magnetic properties from first-principles. Armed with this understanding, we study the orbital magnetism of skyrmions and demonstrate that the contribution driven by the emergent magnetic field is topological. This means that the topological contribution to the orbital moment does not change under continuous deformations of the magnetic structure. Furthermore, we use it to propose a new experimental protocol for the identification of topological magnetic structures, by soft X-ray spectroscopy. |