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arXiv · 0704.0715

Phase separation and flux quantization in the doped quantum dimer model on the square and triangular lattices

A. Ralko·F. Mila·D. Poilblanc
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Abstract

The doped two-dimensional quantum dimer model is investigated by numerical techniques on the square and triangular lattices, with significantly different results. On the square lattice, at small enough doping, there is always a phase separation between an insulating valence-bond solid and a uniform superfluid phase, whereas on the triangular lattice, doping leads directly to a uniform superfluid in a large portion of the RVB phase. Under an applied Aharonov-Bohm flux, the superfluid exhibits quantization in terms of half-flux quanta, consistent with Q=2e elementary charge quanta in transport properties.

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A. Ralko, F. Mila, D. Poilblanc. 2007-07-03. Phase separation and flux quantization in the doped quantum dimer model on the square and triangular lattices. https://doi.org/10.1103/physrevlett.99.127202

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