PhysRevResearch.1.013002.pdf (4.48 MB)
Collective spin dynamics of Z2 vortex crystals in triangular Kitaev-Heisenberg antiferromagnets
journal contribution
posted on 2019-08-19, 15:45 authored by Mengqun Li, Natalia B Perkins, Ioannis RousochatzakisIoannis RousochatzakisWe show that the mesoscopic incommensurate Z2 vortex crystals proposed for layered triangular anisotropic magnets can be most saliently identified by two distinctive signatures in dynamical spin response experiments: the presence of pseudo-Goldstone phononlike modes at low frequencies ω, associated with the collective vibrations of the vortex cores, and a characteristic multiscattered intensity profile at higher ω, arising from a large number of Bragg reflections and magnon band gaps. These are direct fingerprints of the large vortex sizes and magnetic unit cells and the solitonic spin profile around the vortex cores.
Funding
U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0018056
History
School
- Science
Department
- Physics
Published in
Physical Review ResearchVolume
1Issue
1Publisher
American Physical SocietyVersion
- VoR (Version of Record)
Acceptance date
2019-06-26Publication date
2019-08-09Copyright date
2019eISSN
2643-1564Language
- en
Depositor
Dr Ioannis RousochatzakisArticle number
013002Usage metrics
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