Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice

Details Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice

2002-05-03

arxiv.org/abs/cond-mat/0205069v4

Physics

Condensed Matter

Soft Condensed Matter

Replaced with revised version: some technical details and clarifications are added

Scientific paper

10.1103/PhysRevLett.90.100401

If two species of ultracold atoms are loaded in a sufficiently tight optical lattice at a commensurate total filling factor, the net number-of-atoms transport is suppressed by the Mott-Hubbard localization. Nonetheless, the counterflow low-frequency dynamics of the two components may survive. We consider corresponding effective Hamiltonians for the three classes of the two-species insulators-- fermion-fermion, boson-boson, and boson-fermion type-- and reveal the conditions when the resulting groundstate supports super-counter-fluidity (SCF) of the two components. Alternative groundstates are found to be phase-segregated states. We emphasize a crucial role of breaking the isotopic symmetry between the species for realizing the SCF phase.

Affiliated with

Also associated with

No associations

Rating

Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-44992