Crystalline phase of strongly interacting fermi mixtures

被引:53
作者
Petrov, D. S. [1 ]
Astrakharchik, G. E.
Papoular, D. J.
Salomon, C.
Shlyapnikov, G. V.
机构
[1] Univ Paris Sud, CNRS, Lab Phys Theor & Modeles Stat, F-91405 Orsay, France
[2] Russian Res Ctr, IV Kurchatov Atom Energy Inst, Moscow 123182, Russia
[3] Univ Politecn Cataluna, Dept Fis & Engn Nucl, E-08034 Barcelona, Spain
[4] Ecole Normale Super, CNRS, Lab Kastler Brossel, F-75231 Paris, France
[5] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
关键词
D O I
10.1103/PhysRevLett.99.130407
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
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页数:4
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