Quantum spin liquid in a kagome lattice spin-1/2 XY model with four-site exchange

Abstract

We study the ground state phase diagram of a two-dimensional kagome lattice spin-1/2 XY model (J) with a four-site ring exchange interaction (K) using quantum Monte Carlo simulations. We find that the superfluid phase, existing in the regime of small ring exchange, undergoes a direct transition to a Z_2 quantum spin liquid phase at (K/J)_c ~ 22, which is related to the phase proposed by Balents, Girvin and Fisher [Phys. Rev. B, 65 224412 (2002)]. The quantum phase transition between the superfluid and the spin liquid phase has exponents z and νfalling in the 3D XY universality class, making it a candidate for an exotic XY* quantum critical point, mediated by the condensation of bosonic spinons.

4 pages, 5 figures

References in corpus (11)

• "Deconfined" quantum critical points
• Quantum spin-liquid emerging in two-dimensional correlated Dirac fermions
• The critical exponents of the superfluid transition in He4
• Topological Entanglement Entropy of a Bose-Hubbard Spin Liquid
• Atomic quantum simulator for lattice gauge theories and ring exchange models
• D-wave correlated Critical Bose Liquids in two dimensions
• Finite Size Scaling of Mutual Information: A Scalable Simulation
• Spin liquid phase in a $S=1/2$ quantum magnet on the kagome lattice
• Spin liquid correlations in Nd-langasite anisotropic Kagomé antiferromagnet
• Exotic Gapless Mott Insulators of Bosons on Multi-Leg Ladders
• Quantum Phase Transitions around the Staggered Valence Bond Solid

Cited by in corpus (18)

• Quantum Spin Liquids
• Gapless spin-liquid phase in the kagome spin-1/2 Heisenberg antiferromagnet
• Bridging lattice-scale physics and continuum field theory with quantum Monte Carlo simulations
• Finite-size scaling and boundary effects in two-dimensional valence-bond-solids
• Bold Diagrammatic Monte Carlo technique for frustrated spin systems
• Entanglement Structure of Deconfined Quantum Critical Points
• Quantum phases of hard-core bosons in a frustrated honeycomb lattice
• Nature of the phases in the frustrated XY model on the honeycomb lattice
• Magnetic three states of matter: A quantum Monte Carlo study of spin liquids
• Kagome model for a ${\mathbb{Z}}_2$ quantum spin liquid
• Unification of parton and coupled-wire approaches to quantum magnetism in two dimensions
• Supersymmetry on the lattice: Geometry, Topology, and Flat Bands
• Spin dynamics of the planar kagome lattice ferromagnet with four-site ring exchange processes
• The Boson-Hubbard Model on a Kagome Lattice with Sextic Ring-Exchange Terms
• XY ring exchange model with frustrated Ising coupling on the triangular lattice
• The Bose-Hubbard model on a triangular lattice with diamond ring-exchange
• Quantum Spin Superfluid from Bose-Einstein Condensation of Spinons in Pyrochlore Spin Ice
• Breathing kagome XY quantum magnet with four-site ring exchange