Quantum Spin Liquid with Even Ising Gauge Field Structure on Kagome Lattice

ORAL

Abstract

Employing large-scale quantum Monte Carlo simulation, we study the extended XXZ model on kagome lattice. A $\mathbb Z_2$ quantum spin liquid phase with effective even Ising gauge field structure emerges from the delicate balance among three symmetry breaking phases including stripe solid, staggered solid and ferromagnetic phase. This $\mathbb Z_2$ spin liquid is beyond the Lieb-Schultz-Mattis-Oshikawa-Hastings theorem and made possible by the introduction of an extended interaction related to Rokhsar-Kivelson potential. The phase transitions from staggered solid to spin liquid and ferromagnetic phase are first order, so is the transition between stripe solid and ferromagnetic phase. However, the transition between spin liquid and ferromagnetic phase is found to be continuous and belong to 3D XY$^*$ universality class associated with the condensation of spinons, and the transition between spin liquid and stripe solid is seemingly continuous and associated with the condensation of visons.

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Presenters

  • Yancheng Wang

    Chinese Academy of Scienes (CAS), School of Physical Science and Technology, China University of Mining and Technology

Authors

  • Yancheng Wang

    Chinese Academy of Scienes (CAS), School of Physical Science and Technology, China University of Mining and Technology

  • Xue-Feng Zhang

    Department of Physics, Chongqing University, Chongqing

  • Frank Pollmann

    Department of Physics, Technical University of Munich, Physics, TUM, TU München, Technical University of Munich, Physics Department , Technische Universität München, Max-Planck-Institute for the Physics of Complex Systems

  • Meng Cheng

    Department of Physics and Applied Physics, Yale University, Yale University, Department of Physics, Yale University

  • ZiYang Meng

    T03, Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, The Institute of Physics, Chinese Academy of Sciences, Chinese Academy of Scienes (CAS), Institution of physics, Chinese Academic of Sciences (CAS)