BCS-BEC Crossover in Mix-dimensional Fermi Gases

Details BCS-BEC Crossover in Mix-dimensional Fermi Gases BCS-BEC Crossover in Mix-dimensional Fermi Gases

2011-04-13

arxiv.org/abs/1104.2375v1

Eur. Phys. Jour. B83, No.4, 445(2011)

Physics

Condensed Matter

Superconductivity

7 pages, 5 figures

Scientific paper

We investigate a mix-dimensional Fermi-Fermi mixture in which one species is confined in two-dimensional(2D) space while the other is free in three-dimensional space(3D). We determine the superfluid transition temperature $T_{c}$ for the entire BCS-BEC crossover including the important effects of noncondensed pairs. We find that the transition temperature reduces while the imbalance of mass is increased or lattice constant ($dz$) is reduced. In population imbalance case, the stability of superfluid is sharply destroyed by increasing the polarization.

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