Devil's staircases, quantum dimer models, and stripe formation in strong coupling models of quantum frustration

Stefanos Papanikolaou, Kumar S. Raman, Eduardo Fradkin

Research output: Contribution to journalArticlepeer-review

Abstract

We construct a two-dimensional microscopic model of interacting quantum dimers that displays an infinite number of periodic striped phases in its T=0 phase diagram. The phases form an incomplete devil's staircase and the period becomes arbitrarily large as the staircase is traversed. The Hamiltonian has purely short-range interactions, does not break any symmetries of the underlying square lattice, and is generic in that it does not involve the fine-tuning of a large number of parameters. Our model, a quantum mechanical analog of the Pokrovsky-Talapov model of fluctuating domain walls in two-dimensional classical statistical mechanics, provides a mechanism by which striped phases with large periods compared to the lattice spacing can, in principle, form in frustrated quantum magnetic systems with only short-ranged interactions and no explicitly broken symmetries.

Original languageEnglish (US)
Article number094406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number9
DOIs
StatePublished - Mar 5 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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