%0 Journal Article
%A Redies, Matthias
%A Lux, F. R.
%A Hanke, J.-P.
%A Buhl, P. M.
%A Blügel, S.
%A Mokrousov, Y.
%T Mixed topology ring states for Hall effect and orbital magnetism in skyrmions of Weyl semimetals
%J Physical review / B
%V 102
%N 18
%@ 2469-9950
%C Woodbury, NY
%I Inst.
%M FZJ-2020-04988
%P 184407
%D 2020
%X As skyrmion lattices are attracting increasing attention owing to their properties driven by real-space topology, properties of magnetic Weyl semimetals with complex k-space topology are moving into the focus of research. We consider Hall transport properties and orbital magnetism of skyrmion lattices imprinted in topological semimetals by employing a minimal model of a mixed Weyl semimetal which, as a function of the magnetization direction, exhibits two Chern insulator phases separated by a Weyl state. We find that while the orbital magnetization is topologically robust and Hall transport properties exhibit a behavior consistent with that expected for the recently discovered chiral Hall effect [F. R. Lux et al., Phys. Rev. Lett. 124, 096602 (2020)], their evolution in the region of the Chern insulator gap is largely determined by the properties of the so-called mixed topology ring states, emerging in domain walls that separate the skyrmion core from the ferromagnetic background. In particular, we show that these localized ring states possess a robust orbital chirality which reverses sign as a function of the skyrmion radius, thereby mediating a smooth switching dynamics of the orbital magnetization. We speculate that while the emergent ring states can possibly play a role in the physics of Majorana states, probing their properties experimentally can provide insights into the details of skyrmionic spin structures.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000587594900006
%R 10.1103/PhysRevB.102.184407
%U https://juser.fz-juelich.de/record/888524