Anomalous supersolidity in a weakly interacting dipolar Bose mixture on a square lattice

Abstract

We calculate the mean-field phase diagram of a zero-temperature, binary Bose mixture on a square optical lattice, where one species possesses a non-negligible dipole moment. Remarkably, this system exhibits supersolidity for anomalously weak dipolar interaction strengths, which are readily accessible with current experimental capabilities. The supersolid phases are robust, in that they occupy large regions in the parameter space. Further, we identify a first-order quantum phase transition between supersolid and superfluid phases. Our results demonstrate the rich features of the dipolar Bose mixture, and suggest that this system is well-suited for exploring supersolidity in the experimental setting.

4+ pages, 4 figures

References in corpus (17)

• A High Phase-Space-Density Gas of Polar Molecules
• Bose-Einstein condensation of chromium
• Bose-Einstein Condensation of Erbium
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Strong dipolar effects in a quantum ferrofluid
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• Quantum degenerate dipolar Fermi gas
• Monte Carlo study of two-dimensional Bose-Hubbard model
• A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas
• Metastable states of a gas of dipolar bosons in a 2D optical lattice
• Supersolid Helium at High Pressure
• Stable dilute supersolid of two-dimensional dipolar bosons
• Novel quantum phases of dipolar Bose gases in optical lattices
• Density wave and supersolid phases of correlated bosons in an optical lattice
• Ground-State Phase Diagram of the Two-Dimensional Extended Bose-Hubbard Model
• Half-Quantum Vortex Molecules in a Binary Dipolar Bose Gas
• Absence of low temperature anomaly on the melting curve of ${}^4$He

Cited by in corpus (6)

• Fluctuations and quantum self-bound droplets in a dipolar Bose-Bose mixture
• Supersolidity of lattice Bosons immersed in strongly correlated Rydberg dressed atoms
• Beyond mean-field properties of binary dipolar Bose mixtures at low temperatures
• Segregated quantum phases of dipolar bosonic mixtures in two-dimensional optical lattices
• Moving Bose mixtures with dipole-dipole interactions
• Superfluidity and coherence in uniform dipolar binary Bose mixtures