Instability of Fulde-Ferrell-Larkin-Ovchinnikov states in three and two dimensions

Abstract

The exotic Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states have been actively searched for experimentally since the mean-field based FFLO theories were put forward half a century ago. Here we investigate the stability of FFLO states against unavoidable pairing fluctuations, and conclude that FFLO superfluids cannot exist due to their intrinsic instability in three and two dimensions. This explains their absence in experimental observations in both condensed matter systems and the most recent, more promising ultracold atomic Fermi gases with a population imbalance.

main paper plus supplementary information, 11 pages in total, 8 figures

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• Homogeneous Atomic Fermi Gases
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• Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices
• Intertwined Orders in Heavy-Fermion Superconductor CeCoIn${}_5$
• Stable Fulde-Ferrell-Larkin-Ovchinnikov pairing states in 2D and 3D optical lattices
• Characterizing the Larkin-Ovchinnikov-Fulde-Ferrel phase induced by the chromomagnetic instability
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• Collective mode contributions to the Meissner effect: Fulde-Ferrell and pair-density wave superfluids
• Suppression or enhancement of the Fulde-Ferrell-Larkin-Ovchinnikov order in a one-dimensional optical lattice with particle correlated tunnelling
• Stability of FFLO states in optical lattices with bilayer structure
• Inhomogeneous magnetic phases: a LOFF-like phase in Sr3Ru2O7
• The three flavor LOFF phase of QCD

Cited by in corpus (22)

• Quantum-geometry-induced anapole superconductivity
• Polarized fermions in one dimension: density and polarization from complex Langevin calculations, perturbation theory, and the virial expansion
• Non-equilibrium strong-coupling theory for a driven-dissipative ultracold Fermi gas in the BCS-BEC crossover region
• Quantum Lifshitz points and fluctuation-induced first-order phase transitions in imbalanced Fermi mixtures
• Disordered structures in ultracold spin-imbalanced Fermi gas
• Evolution of an attractive polarized Fermi gas: From a Fermi liquid of polarons to a non-Fermi liquid at the Fulde-Ferrell-Larkin-Ovchinnikov quantum critical point
• Unconventional superconductivity of an altermagnetic metal: Polarized BCS and inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov states
• Feasibility of a Fulde-Ferrell-Larkin-Ovchinnikov superfluid Fermi atomic gas
• Stability of the Fulde-Ferrell-Larkin-Ovchinnikov states in anisotropic systems and critical behavior at thermal $m$-axial Lifshitz points
• Stable non-equilibrium Fulde-Ferrell-Larkin-Ovchinnikov state in a spin-imbalanced driven-dissipative Fermi gas loaded on a three-dimensional cubic optical lattice
• Ground states of atomic Fermi gases in a two-dimensional optical lattice with and without population imbalance
• Superfluidity and pairing phenomena in ultracold atomic Fermi gases in one-dimensional optical lattices, Part II: Effects of population imbalance
• Phase diagrams of neutron-proton superfluid in asymmetric nuclear matter
• Damping of the Anderson-Bogolyubov mode by spin and mass imbalance in Fermi mixtures
• The Gor'kov and Melik-Barkhudarov correction to the mean-field critical field transition to Fulde-Ferrell-Larkin-Ovchinnikov states
• Spin-orbit coupled mean-field Bose gas at finite temperature
• Temperature tuned Fermi surface topology and segmentation in non-centrosymmetric superconductors
• Fulde-Ferrell states in unequally charged Fermi gases
• Intersubband pairing induced Fulde-Ferrell phase in metallic nanofilms
• Anomalous Superfluid Density in Pair-Density-Wave Superconductors
• Strong Fulde-Ferrell Larkin-Ovchinnikov pairing fluctuations in polarized Fermi systems
• Imbalanced Fermi systems and exotic superconducting phases