SKM 2023 – scientific programme
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MA: Fachverband Magnetismus
MA 47: Skyrmions IV
MA 47.8: Talk
Friday, March 31, 2023, 11:30–11:45, HSZ 04
Quantum correlation functions of magnetic skyrmions in chiral magnets — •Sopheak Sorn1 and Markus Garst1,2 — 1Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany — 2Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Recent research activities have turned to studying quantum effects in skyrmion-hosting ordered phases within the context of numerical diagonalization of quantum spin Hamiltonians as well as semiclassical magnonic theories. In the later, one can expand various operators in magnon fields around a classical spin-texture background. In this talk, I will present results from such a semiclassical theory for chiral magnets, focusing on various correlation functions involving the topological charge and the energy-momentum tensor at zero and nonzero temperature. I will also discuss how these correlation functions are related to linear responses of skyrmions to external perturbation.