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arXiv · 1711.03679

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

Yan-Cheng Wang·Xue-Feng Zhang·Frank Pollmann·Meng Cheng·Zi Yang Meng
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Abstract

Employing large-scale quantum Monte Carlo simulations, we study the extended $XXZ$ model on the 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 ferromagnet. This $\mathbb{Z}_2$ spin liquid is stabilized by an extended interaction related to the Rokhsar-Kivelson potential in the quantum dimer model limit. The phase transitions from the staggered solid to a spin liquid or ferromagnet are found to be first order and so is the transition between the stripe solid and ferromagnet. However, the transition between a spin liquid and ferromagnet is found to be continuous and belongs to the 3D $XY^*$ universality class associated with the condensation of spinons. The transition between a spin liquid and stripe solid appears to be continuous and associated with the condensation of visons.

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Yan-Cheng Wang, Xue-Feng Zhang, Frank Pollmann, Meng Cheng, Zi Yang Meng. 2018-08-03. Quantum Spin Liquid with Even Ising Gauge Field Structure on Kagome Lattice. https://doi.org/10.1103/physrevlett.121.057202

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