CP<sup>2</sup> Skyrmion and Skyrmion Crystals in Realistic Quantum Magnets

ORAL

Abstract

Magnetic skyrmions are nanoscale topological textures recently observed in different families of quantum magnets. These textures are called CP1 skyrmions because the target manifold of the magnetization field is the 2D sphere S2≅CP1. In this work, we will generalize the concept of magnetic skyrmions by exploiting the fact that N-level systems admit more than one classical limit. Here we report the emergence of magnetic CP2 skyrmions in realistic spin-1 models based on SU(3) coherent states. Moreover, unlike CP1 skyrmions, CP2 skyrmions can also arise as metastable textures of quantum paramagnets, opening a new road to discover emergent topological solitons in non-magnetic materials.

*The work by H.Z. was supported by the Graduate Advancement, Training, and Education (GATE) fellowship. D. D., K. B., and C.D.B. acknowledge support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0022311. Z.W. was supported by the U.S. Department of Energy through the University of Minnesota Center for Quantum Materials under Award No. DE-SC-0016371.

–

Publication: arXiv:2203.15248

Presenters

  • Hao Zhang

    • University of Tennessee

Authors

  • Hao Zhang

    • University of Tennessee

  • Zhentao Wang

    • University of Minnesota

  • David Dahlbom

    • University of Tennessee

  • Kipton M Barros

    • Los Alamos Natl Lab
    • Theoretical Division and CNLS, Los Alamos National Laboratory

  • Cristian Batista

    • University of Tennessee
    • University of Tennessee, Knoxville