$\eta$--paired superconducting hidden phase in photodoped Mott insulators

Abstract

We show that a metastable $\eta$--pairing superconducting phase can be induced by photodoping doublons and holes into a strongly repulsive fermionic Hubbard model. The doublon-hole condensate originates from an intrinsic doublon-hole exchange interaction and does not rely on the symmetry of the half-filled Hubbard model. It extends over a wide range of doublon densities and effective temperatures. Different non-equilibrium protocols to realize this state are proposed and numerically tested. We also study the optical conductivity in the superconducting phase, which exhibits ideal metallic behavior, i.e., a delta function at zero-frequency in the conductivity, in conjunction with a negative conductivity at large frequencies. These characteristic optical properties can provide a fingerprint of the $\eta$-pairing phase in pump-probe experiments.

12 pages

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Cited by in corpus (49)

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• Exploring nonequilibrium phases of photo-doped Mott insulators with Generalized Gibbs ensembles
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• Nonequilibrium steady-state theory of photodoped Mott insulators
• Many-Body Open Quantum Systems
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• Witnessing nonequilibrium entanglement dynamics in a strongly correlated fermionic chain
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• Photoinduced metallization of excitonic insulators
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• Photo-induced Ferromagnetic and Superconducting Orders in Multi-orbital Hubbard Models
• Dynamic generation of nonequilibrium superconducting states in Kitaev chain
• Dynamically induced doublon repulsion in the Fermi-Hubbard model probed by a single-particle density of states
• Suppression of Heating by Multi-color Driving Protocols in Floquet Engineered Strongly Correlated Systems
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• Steady off-diagonal long-range order state in a half-filled dimerized Hubbard chain induced by a resonant pulsed field
• Memory-Efficient Nonequilibrium Green's Function Framework Built On Quantics Tensor Trains
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• Photoinduced $\eta$-pairing correlation in the Hubbard ladder
• Role of phonon coupling in driving photo-excited Mott insulators towards a transient superconducting steady state
• Photo-induced charge, spin, and orbital order in the two-orbital extended Hubbard model
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• Superconductor-like effects in an AC driven normal Mott-insulating quantum dot array
• A light-induced charge order mode in a metastable cuprate ladder
• Higgs mode stabilization by photo-induced long-range interactions in a superconductor
• Ultrafast metal-to-insulator switching in a strongly correlated system
• Radiative Higgs mode in photoinduced $\eta$ pairs
• Photoinduced excitonic magnetism in a multiorbital Hubbard system
• Photoemission Signatures of Photoinduced Carriers and Excitons in One-Dimensional Mott Insulators
• Ultrafast light-induced long range antiferromagnetic correlations in paramagnets
• Tunable intertwining via collective excitations
• Electronic modes induced by spin and charge perturbations in Mott and Kondo insulators