Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures.

ABSTRACT: 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 i

SUBMITTER: Dos Santos Dias M 

PROVIDER: S-EPMC5187428 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature