Supersolid Phase of Cold Fermionic Polar Molecules in 2D Optical Lattices
arXiv:1101.5633 · doi:10.1103/PhysRevA.83.053629
Abstract
We study a system of ultra-cold fermionic polar molecules in a two-dimensional square lattice interacting via both the long-ranged dipole-dipole interaction and a short-ranged on-site attractive interaction. Singlet superfluid, charge density wave, and supersolid phases are found to exist in the system. We map out the zero temperature phase diagram and find that the supersolid phase is considerably stabilized by the dipole-dipole interaction and thus can exist over a large region of filling factors. We study the melting of the supersolid phase with increasing temperature, map out a finite temperature phase diagram of the system at fixed filling, and determine the parameter region where the supersolid phase can possibly be observed in experiments.
8 pages, 5 figures
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- A Strongly Dipolar Bose-Einstein Condensate of Dysprosium
- Quantum degenerate dipolar Fermi gas
- Quantum control of molecular rotation
- Beyond Mean-Field Low-Lying Excitations of Dipolar Bose Gases
- Creation of a low-entropy quantum gas of polar molecules in an optical lattice
- Quantum Magnetism with Polar Alkali Dimers
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- Physical dipoles and second order perturbation theory for dipolar fermions in two dimensions
- Tunable boson-assisted finite-range interaction and engineering Majorana corner modes in optical lattices
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- Classical crystal formation of dipoles in two dimensions
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