Nature of the phases in the frustrated X y model on the honeycomb lattice

Juan Carrasquilla, Andrea Di Ciolo, Federico Becca, Victor Galitski, Marcos Rigol

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We study the phase diagram of the frustrated XY model on the honeycomb lattice by using accurate correlated wave functions and variational Monte Carlo simulations. Our results suggest that a spin-liquid state is energetically favorable in the region of intermediate frustration, intervening between two magnetically ordered phases. The latter ones are represented by classically ordered states supplemented with a long-range Jastrow factor, which includes relevant correlations and dramatically improves the description provided by the purely classical solution of the model. The construction of the spin-liquid state is based on a decomposition of the underlying bosonic particles in terms of spin-1/2 fermions (partons), with a Gutzwiller projection enforcing no single occupancy, as well as a long-range Jastrow factor.

Original languageEnglish (US)
Article number241109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number24
DOIs
StatePublished - Dec 20 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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