Interlayer Superfluidity in Bilayer Systems of Fermionic Polar Molecules

Year: 2010

Authors: Pikovski A., Klawunn M., Shlyapnikov G.V., Santos L.

Autors Affiliation: Leibniz Univ Hannover, Inst Theoret Phys, D-30169 Hannover, Germany; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; Univ Paris 11, CNRS, Lab Phys Theor & Modeles Stat, F-91405 Orsay, France; Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands.

Abstract: We consider fermionic polar molecules in a bilayer geometry where they are oriented perpendicularly to the layers, which permits both low inelastic losses and superfluid pairing. The dipole-dipole interaction between molecules of different layers leads to the emergence of interlayer superfluids. The superfluid regimes range from BCS-like fermionic superfluidity with a high T-c to Bose-Einstein (quasi-) condensation of interlayer dimers, thus exhibiting a peculiar BCS-Bose-Einstein condensation crossover. We show that one can cover the entire crossover regime under current experimental conditions.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 105 (21)      Pages from: 215302-1  to: 215302-4

More Information: We are grateful to T. Vekua and D. Jin for helpful discussions. A. P. was supported by the DFG (QUEST Cluster). We acknowledge support from the ESF (EuroQuasar and EuroQuam programs). G. S. acknowledges support from the IFRAF Institute, from ANR (Grant No. 08-BLAN0165), and from the Dutch Foundation FOM.
KeyWords: Many-body Physics; Bound-state; Gases; Superconductivity; Density
DOI: 10.1103/PhysRevLett.105.215302

Citations: 97
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