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Establishing the fundamental magnetic interactions in the chiral Skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
journal contribution
posted on 2018-08-07, 15:20 authored by M. Ozerov, Judit Romhanyi, M. Belesi, H. Berger, J.P. Ansermet, Jeroen van den Brink, J. Wosnitza, S.A. Zvyagin, Ioannis RousochatzakisIoannis RousochatzakisThe recent discovery of Skyrmions in Cu2OSeO3 has established a new platform to create and manipulate Skyrmionic spin textures. We use high-field electron spin resonance with a terahertz free-electron laser and pulsed magnetic fields up to 64 T to probe and quantify its microscopic spin-spin interactions. In addition to the previously observed long-wavelength Goldstone mode, this technique probes also the high-energy part of the excitation spectrum which is inaccessible by standard low-frequency electron spin resonance. Fitting the behavior of the observed modes in magnetic field to a theoretical framework establishes experimentally that the fundamental magnetic building blocks of this Skyrmionic magnet are rigid, highly entangled and weakly coupled tetrahedra.
History
School
- Science
Department
- Physics
Published in
Physical Review LettersVolume
113Issue
15Citation
OZEROV, M. ... et al, 2014. Establishing the fundamental magnetic interactions in the chiral Skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance. Physical Review Letters, 113 (15), 157205.Publisher
© American Physical SocietyVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2014Notes
This paper was published in the journal Physical Review Letters and the definitive published version is available at https://doi.org/10.1103/PhysRevLett.113.157205.ISSN
0031-9007eISSN
1079-7114Publisher version
Language
- en