Pair correlations of a spin-imbalanced Fermi gas on two-leg ladders

Abstract

We study the pair correlations of a spin-imbalanced two-leg ladder with attractive interactions, using the density matrix renormalization group method (DMRG). We identify regions in the phase diagram spanned by the chemical potential and the magnetic field that can harbor Fulde-Ferrell-Larkin-Ovchinnikov (FFLO)-like physics. Results for the pair structure factor, exhibiting multiple pairing wave-vectors, substantiate the presence of FFLO-like correlations. We further discuss phase separation scenarios induced by a harmonic trap, which differ from the case of isolated chains.

arXiv commentTo appear in Phys. Rev. Lett.; minor revisions

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Cited by in corpus (36)

• Fermi gases in one dimension: From Bethe Ansatz to experiments
• The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
• Matrix product ansatz for Fermi fields in one dimension
• Breaking the entanglement barrier: Tensor network simulation of quantum transport
• Phase separation of trapped spin-imbalanced Fermi gases in one-dimensional optical lattices
• Luttinger liquid of trimers in Fermi gases with unequal masses
• Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
• Spectroscopy of the soliton lattice formation in quasi-one-dimensional fermionic superfluids with population imbalance
• Pairing in a two-dimensional Fermi gas with population imbalance
• Open System Tensor Networks and Kramers' Crossover for Quantum Transport
• BCS-BEC crossover and the disappearance of FFLO-correlations in a spin-imbalanced, one-dimensional Fermi gas
• Dimer, trimer and FFLO liquids in mass- and spin-imbalanced trapped binary mixtures in one dimension
• Angular Fulde-Ferrell-Larkin-Ovchinnikov state in cold fermion gases in a toroidal trap
• Pair tunneling, phase separation and dimensional crossover in imbalanced fermionic superfluids in a coupled array of tubes
• Exotic paired states with anisotropic spin-dependent Fermi surfaces
• Oscillatory pairing amplitude and magnetic compressible-incompressible transitions in imbalanced fermionic superfluids in optical lattices of elongated tubes
• Modulated pair condensate of p-orbital ultracold fermions
• Finite temperature stability and dimensional crossover of exotic superfluidity in lattices
• Interaction quantum quenches in the one-dimensional Fermi-Hubbard model with spin imbalance
• Ground states and dynamics of population-imbalanced Fermi condensates in one dimension
• FFLO strange metal and quantum criticality in two dimensions: theory and application to organic superconductors
• Fulde-Ferrell--Larkin-Ovchinnikov state in the dimensional crossover between one- and three-dimensional lattices
• Exotic paired phases in ladders with spin-dependent hopping
• Rotating Fulde-Ferrell-Larkin-Ovchinnikov state in cold Fermi gases
• Dimensional Crossover in a Spin-imbalanced Fermi gas
• Quantum Coherent States of Interacting Bose-Fermi Mixtures in One Dimension
• Pure Fulde-Ferrell-Larkin-Ovchinnikov state in optical lattices
• Gibbs phenomenon and the emergence of the steady-state in quantum transport
• Cooling schemes for two-component fermions in layered optical lattices
• Phase diagrams of polarized ultra-cold gases on attractive-U Hubbard ladders
• Nesting and lifetime effects in the FFLO state of quasi-one-dimensional imbalanced Fermi gases
• Drude weight increase by orbital and repulsive interactions in fermionic ladders
• Polarized Fermi gases in asymmetric optical lattices
• Incompressible states of a two-component Fermi gas in a double-well optical lattice
• Dimensional crossover on multileg attractive-$U$ Hubbard ladders
• Imbalanced superfluid state in an annular disk