Emergence of Metallic Quantum Solid Phase in a Rydberg-Dressed Fermi Gases

Abstract

We examine possible low-temperature phases of a repulsively Rydberg-dressed Fermi gas in a three-dimensional free space. It is shown that the collective density excitations develop a roton minimum, which is softened at a wavevector smaller than the Fermi wavevector when the particle density is above a critical value. The mean field calculation shows that unlike the insulating charge density waves states often observed in conventional condensed matters, a self-assembled metallic density wave state emerges at low temperatures. In particular, the density wave state supports a Fermi surface and a body-center-cubic crystal order at the same time with the estimated critical temperature being about one-tenth of the non-interacting Fermi energy. Our results suggest the emergency of a fermionic quantum solid that should be observable in current experimental setup.

5 pages, 4 figures

References in corpus (7)

• Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Cooperative atom-light interaction in a blockaded Rydberg ensemble
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas
• Rydberg-induced Solitons: Three-dimensional Self-trapping of Matter Waves
• Exotic topological density waves in cold atomic Rydberg fermions

Cited by in corpus (11)

• Quench Dynamics of a Fermi Gas with Strong Non-Local Interactions
• Rotons and Bose condensation in Rydberg-dressed Bose Gases
• Rydberg optical Feshbach resonances in cold gases
• Phase-diagram and dynamics of Rydberg-dressed fermions in two-dimensions
• $f$-wave superfluidity from repulsive interaction in Rydberg-dressed Fermi gas
• Coupled rate-equation hydrodynamic simulation of a Rydberg gas Gaussian ellipsoid: Classical avalanche and evolution to molecular plasma
• Rydberg-dressed Fermi liquid: correlations and signatures of droplet crystallization
• Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions
• Static density response of one-dimensional soft bosons across the clustering transition
• Evolution of static and dynamical density correlations in a one-dimensional soft-core gas from the Tonks-Girardeau limit to a clustering fluid
• Density and pseudo-spin rotons in a bilayer of soft-core bosons