Fermionic superfluidity: From high Tc superconductors to ultracold Fermi gases

Details Fermionic superfluidity: From high Tc superconductors to ultracold Fermi gases Fermionic superfluidity: From high Tc superconductors to ultracold Fermi gases

2006-12-11

arxiv.org/abs/cond-mat/0612268v2

J. supercond. Nov. Magn. 20, 515 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

Expanded version, invited talk at the 5th International Conference on Complex Matter -- Stripes 2006, 6 pages, 6 figures

Scientific paper

10.1007/s10948-007-0282-z

We present a pairing fluctuation theory which self-consistently incorporates finite momentum pair excitations in the context of BCS--Bose-Einstein condensation (BEC) crossover, and we apply this theory to high $T_c$ superconductors and ultracold Fermi gases. There are strong similarities between Fermi gases in the unitary regime and high Tc superconductors. Here we address key issues of common interest, especially the pseudogap. In the Fermi gases we summarize recent experiments including various phase diagrams (with and without population imbalance), as well as evidence for a pseudogap in thermodynamic and other experiments.

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