Ultracold heteronuclear molecules and ferroelectric superfluids

Details Ultracold heteronuclear molecules and ferroelectric superfluids Ultracold heteronuclear molecules and ferroelectric superfluids

2006-10-13

arxiv.org/abs/cond-mat/0610380v1

Phys. Rev. Lett. 99, 110402 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages and 3 figures

Scientific paper

10.1103/PhysRevLett.99.110402

We analyze the possibility of a ferroelectric transition in heteronuclear molecules consisting of Bose-Bose, Bose-Fermi or Fermi-Fermi atom pairs. This transition is characterized by the appearance of a spontaneous electric polarization below a critical temperature. We discuss the existence of a ferroelectric Fermi liquid phase for Fermi molecules and the existence of a ferroelectric superfluid phase for Bose molecules characterized by the coexistence of ferroelectric and superfluid orders. Lastly, we propose an experiment to detect ferroelectric correlations through the observation of coherent dipole radiation pulses during time of flight.

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