Spontaneous interlayer superfluidity in bilayer systems of cold polar molecules

Details Spontaneous interlayer superfluidity in bilayer systems of cold polar molecules Spontaneous interlayer superfluidity in bilayer systems of cold polar molecules

2009-11-08

arxiv.org/abs/0911.1378v2

Phys. Rev. A 82, 061604(R) (2010)

Physics

Condensed Matter

Quantum Gases

7 pages, 5 figures, final version

Scientific paper

10.1103/PhysRevA.82.061604

Quantum degenerate cold-atom gases provide a remarkable opportunity to study strongly interacting systems. Recent experimental progress in producing ultracold polar molecules with a net electric dipole moment opens up new possibilities to realize novel quantum phases governed by the long-range and anisotropic dipole-dipole interactions. In this work we predict the existence of experimentally observable novel broken-symmetry states with spontaneous interlayer coherence in cold polar molecules. These exotic states appear due to strong repulsive interlayer interactions and exhibit properties of superfluids, ferromagnets and excitonic condensates.

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