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arXiv · 1103.4123

Kaleidoscope of exotic quantum phases in a frustrated XY model

Christopher N. Varney·Kai Sun·Victor Galitski·Marcos Rigol
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Abstract

The existence of quantum spin liquids was first conjectured by Pomeranchuk some 70 years ago, who argued that frustration in simple antiferromagnetic theories could result in a Fermi-liquid-like state for spinon excitations. Here we show that a simple quantum spin model on a honeycomb lattice hosts the long sought for Bose metal with a clearly identifiable Bose surface. The complete phase diagram of the model is determined via exact diagonalization and is shown to include four distinct phases separated by three quantum phase transitions.

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Christopher N. Varney, Kai Sun, Victor Galitski, Marcos Rigol. 2011-08-08. Kaleidoscope of exotic quantum phases in a frustrated XY model. https://doi.org/10.1103/physrevlett.107.077201

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