What can ultracold Fermi gases teach us about high $T_c$ superconductors and vice versa?

Details What can ultracold Fermi gases teach us about high $T_c$ superconductors and vice versa? What can ultracold Fermi gases teach us about high $T_c$ superconductors and vice versa?

2006-11-06

arxiv.org/abs/cond-mat/0611104v1

Physica C: Superconductivity, Vol. 460-462, Part 1, 1 September 2007, Pages 347-350

Physics

Condensed Matter

Superconductivity

4 pages, 6 figures, to appear in a special issue of Physica C for the M2S-HTSC VIII Conference Proceedings

Scientific paper

10.1016/j.physc.2007.03.293

We review recent developments in the field of ultracold atomic Fermi gases. As the cold atom system evolves from BCS to Bose-Einstein condensation (BEC), the behavior of the thermodynamics, and the particle density profiles evolves smoothly in a way which can be well understood theoretically. In the interesting "unitary" regime, we show that these and other data necessarily requires the introduction of a pseudogap in the fermionic spectrum which exhibits many striking similarities to its counterpart in underdoped high $T_c$ superconductors. We emphasize these similarities, giving an overview of the experimental tools and key issues of common interest in both systems.

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