Crystalline phase of strongly interacting Fermi mixtures
Statistical Mechanics
2007-10-04 v2
Abstract
We show that the system of weakly bound molecules of heavy and light fermionic atoms is characterized by a long-range intermolecular repulsion and can undergo a gas-crystal quantum transition if the mass ratio exceeds a critical value. For the critical mass ratio above 100 obtained in our calculations, this crystalline order can be observed as a superlattice in an optical lattice for heavy atoms with a small filling factor. We also find that this novel system is sufficiently stable with respect to molecular relaxation into deep bound states and to the process of trimer formation.
Cite
@article{arxiv.0706.2855,
title = {Crystalline phase of strongly interacting Fermi mixtures},
author = {D. S. Petrov and G. E. Astrakharchik and D. J. Papoular and C. Salomon and G. V. Shlyapnikov},
journal= {arXiv preprint arXiv:0706.2855},
year = {2007}
}