Skyrmion Crystals in Classical and Quantum Magnets

Abstract:

Topological spin textures have been recently observed in different families of magnetic compounds and domenstrate great potential in applications such as spintronics and data storage technologies. In this talk, we will explain the formation mechanism of skyrmion crystals in centrosymmetric metallic magnets, where the spins are typically localized 4f semi-classical moments (Gd3+). Then we discuss how quantum effects can create more exotic types of skyrmions, where a particular S=1 example is used to demonstrate the possibility of realizing magnetic CP2 skyrmions in quantum magnets.

Bio:

Zhentao Wang is a theoretical condensed matter physicist working at Zhejiang University. He got his Bachelor degree from University of Science and Technology of China in 2010, and PhD in physics from Rice University in 2016. He worked as a postdoc at University of Tennessee from 2016 to 2020, and University of Minnesota from 2020 to 2022. His major research interest lies in the emergent collective phenomena in strongly correlated electron systems, particularly including quantum and classical magnets, spin liquids, fractional and topological excitations, and crystals of topological textures. His research highlights both theoretical prediction of quantum phenomena and close collaboration with experiments on quantum materials.