DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance
, 2008 We show that both DC and AC Josephson effects with superfluid Fermi atoms in the BCS-BEC crossover can be described at zero temperature by a nonlinear Schrodinger equation (NLSE).
A. Barone +19 more
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Applying BCS-BEC Crossover Theory To High Temperature Superconductors and Ultracold Atomic Fermi Gases [PDF]
, 2005 This review is written at the time of the twentieth anniversary of the discovery of high temperature superconductors, which, nearly coincides with the important discovery of the superfluid phases of ultracold trapped fermionic atoms.
Chen, Qijin, Levin, K., Stajic, Jelena
core +2 more sources
Pairing sizes in attractively interacting Fermi gases with Spin-orbit Couplings
, 2014 Extensive research has been lavished on effects of spin-orbit couplings (SOC) in attractively interacting Fermi systems in both neutral cold atom systems and condensed matter systems. Recently, it was suggested that a SOC drives a new class of BCS to BEC
Liu, Wu-Ming, Ye, Jinwu, Yu, Yi-Xiang
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Exactly Solvable BCS-BEC crossover Hamiltonians [PDF]
, 2013 We demonstrate a novel approach that allows the determination of very general classes of exactly solvable Hamiltonians via Bethe ansatz methods. This approach combines aspects of both the co-ordinate Bethe ansatz and algebraic Bethe ansatz.
Birrell, Andrew +2 more
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Collective mode of homogeneous superfluid Fermi gases in the BEC-BCS crossover
, 2006 We perform a detailed study of the collective mode across the whole BEC-BCS crossover in fermionic gases at zero temperature, covering the whole range of energy beyond the linear regime. This is done on the basis of the dynamical BCS model.
A. A. Abrikosov +8 more
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Signatures of the BCS-BEC crossover in the yrast spectra of Fermi quantum rings
Physical Review Research, 2021 We study properties of the lowest energy states at nonzero total momentum (yrast states) of the Hubbard model for spin-1/2 fermions in the quantum ring configuration with attractive on-site interaction at low density.
Ulrich Ebling, Ali Alavi, Joachim Brand
doaj +1 more source
Exploring the BEC-BCS Crossover with an Ultracold Gas of $^6$Li Atoms
, 2004 We present an overview of our recent measurements on the crossover from a Bose-Einstein condensate of molecules to a Bardeen-Cooper-Schrieffer superfluid.
Altmeyer, A. +7 more
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Cooper pair polaritons in cold fermionic atoms within a cavity
Physical Review Research, 2020 We formulate a Bardeen-Cooper-Schriffer (BCS) theory of quasiparticles in a degenerate Fermi gas strongly coupled to photons in a optical cavity. The elementary photonic excitations of the system are cavity polaritons, which consist of a cavity photon ...
Amaury Dodel +6 more
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Dispersion and Damping of Phononic Excitations in Fermi Superfluid Gases in 2D
Condensed Matter, 2020 We calculate the sound velocity and the damping rate of the collective excitations of a 2D fermionic superfluid in a non-perturbative manner. Specifically, we focus on the Anderson−Bogoliubov excitations in the BEC-BCS crossover regime, as these ...
Lars-Paul Lumbeeck +2 more
doaj +1 more source
Superconductor-Insulator Transition and Fermi-Bose Crossovers
Physical Review X, 2016 The direct transition from an insulator to a superconductor (SC) in Fermi systems is a problem of long-standing interest, which necessarily goes beyond the standard BCS paradigm of superconductivity as a Fermi surface instability.
Yen Lee Loh +4 more
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