Supersolid states in a hard-core Bose-Hubbard model on a layered triangular lattice

Abstract

We study ground-state properties in a hard-core Bose-Hubbard model on a layered triangular lattice. Combining cluster mean-field theory with the density matrix renormalization group method, we discuss the effect of the interlayer coupling on the supersolid states realized in a single layered model. By examining the distributions for the particle density and superfluid order parameter, the rich phase diagram of the system is obtained. We find that the supersolid states are widely stabilized at a commensurate filling, in contrast to the case of the single layered model. The nature of the supersolid states is also addressed.

7 pages, 9 figures

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Cited by in corpus (5)

• Mean-field phases of an ultracold gas in a quasicrystalline potential
• Role of the spin-orbit coupling in the Kugel-Khomskii model on the honeycomb lattice
• Mott Insulator-like Bose-Einstein Condensation in a Tight-Binding System of Interacting Bosons with a Flat Band
• Critical Temperatures of Hard-Core Boson Model on Square Lattice within Bethe Approximation
• Off-Diagonal Long-Range Order Implies Vanishing Charge Gap