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  • Letter

Chiral broken symmetry descendants of the kagome lattice chiral spin liquid

Anjishnu Bose1, Arijit Haldar1, Erik S. Sørensen2, and Arun Paramekanti1,*

  • 1Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S 1A7
  • 2Department of Physics, McMaster University, 1280 Main St. W., Hamilton, Ontario, Canada L8S 4M1

  • *arunp@physics.utoronto.ca

Phys. Rev. B 107, L020411 – Published 25 January, 2023

DOI: https://doi.org/10.1103/PhysRevB.107.L020411

Abstract

The breaking of chiral and time-reversal symmetries provides a pathway to exotic quantum phenomena and topological phases. Recent work has extensively explored the resulting emergence of chiral charge orders and chiral spin liquids (CSLs) on the kagome lattice. Such CSLs are closely tied to bosonic fractional quantum Hall states with anyonic quasiparticles; however, their connection to nearby ordered states has remained a mystery. Here, we use spin-wave theory, parton Gutzwiller wave functions, and exact diagonalization to show that two distinct magnetic orders with uniform scalar chirality—the XYZ umbrella state and the octahedral spin crystal–emerge as competing orders in close proximity to the CSL. In this letter, we highlight the intimate link between a topologically ordered liquid and broken symmetry states with nontrivial real-space topology.

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