Pseudogap Effects of Fermi Gases in the Presence of A Strong Effective Magnetic Field

Abstract

We address the important question of how to characterize the normal state of fermionic superfluids under the influence of a strong effective magnetic field, implemented through rapid rotation or novel artificial field techniques. We consider the effects of crossing from BCS to BEC and the role of non-condensed pairs, or pseudogap effects. Using a simple extension of Gor'kov theory we demonstrate how these pairs organize above the transition $T_c$ into precursors of a vortex configuration, which are associated with distortions of the ideal Abrikosov lattice. This non-uniform normal state appears to enable "Bose condensation" in a field which is otherwise problematic due to the effective one-dimensionality of Landau level dispersion.

5 pages, 3 figures

References in corpus (5)

• Optical Flux Lattices for Ultracold Atomic Gases
• Critical Rotational Frequency for Superfluid Fermionic Gases across a Feshbach Resonance
• Density waves and supersolidity in rapidly rotating atomic Fermi gases
• Superfluid transition in a rotating resonantly-interacting Fermi gas
• Quantum Fluctuations of Vortex Lattices in Ultracold Gases

Cited by in corpus (3)

• When Superconductivity Crosses Over: From BCS to BEC
• Theory of Fluctuating Charge Ordering in the Pseudogap Phase of the Cuprates Via A Preformed Pair Approach
• Quantum oscillations in non-Fermi liquids: Implications for high-temperature superconductors