Spin liquids on an anisotropic kagome lattice

ORAL

Abstract

Much recent theoretical and experimental effort has been devoted to the search for quantum spin liquids, which arise in the presence of strong frustration of magnetic interactions. Motivated by recent experiments on the vanadium oxyfluoride material DQVOF, we examine possible spin liquid phases on an anisotropic kagome lattice of $S=1/2$ spins, in which the $C_6$ symmetry is broken to $C_3$. Using the projective symmetry group analysis, we determine the possible phases for both bosonic and fermionic $Z_2$ spin liquids on this lattice. Using VMC, we study the Heisenberg model on this lattice, and show that a $Z_2$ spin liquid emerges as the ground state in the presence of this anisotropy.

–

Authors

  • Robert Schaffer

    • Univ of Toronto

  • Kyusung Hwang

    • Univ of Toronto

  • Yejin Huh

    • University of Toronto
    • Department of Physics and Centre for Quantum Materials, University of Toronto, Toronto, Ontario M5S 1A7, Canada
    • Univ of Toronto

  • Yong Baek Kim

    • University of Toronto
    • Department of Physics and Centre for Quantum Materials, University of Toronto, Toronto, Ontario M5S 1A7, Canada
    • University of Toronto; Korea Institute for Advanced Study
    • Univ of Toronto
    • Physics Department, Univ of Toronto, Ontario; School of Physics, Korea Institute for Advanced Study, Seoul