Photo-induced superconducting-like response in strongly correlated systems

Abstract

We propose a novel mechanism for the photo-induced superconducting-like response recently reported in cuprates and other strongly correlated materials. This mechanism relies on quantum-fluctuating bosons consisting of electron pairs. With periodic drive, the electron pairs and vacancies of pairs form a coherent non-equilibrium condensate, different from conventional superconductors, yet showing superconducting-like response in some regimes even with dissipation. Unlike the case of driven fermionic bands which results in the familiar Floquet bands with hybridization gaps, for driven bosons the "gap" opens up in the momentum direction, resulting in a resonant region in momentum space where the eigenvalues are complex. We give a simple physical argument why this picture leads to a "perfect conductor" which exhibits superconducting-like frequency-dependent conductivity but no Meissner response. While our model is quite general, in the case of cuprates, quantum-fluctuating pair density wave in the pseudogap region may serve as the origin of the quantum-fluctuating electron pairs.

arXiv comment11 + 5 pages, 5 figues

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Cited by in corpus (10)

• Light-induced emergent phenomena in 2D materials and topological materials
• Near-infrared light-induced superconducting-like state in underdoped YBa${}_2$Cu${}_3$O${}_y$ studied by $c$-axis terahertz third-harmonic generation
• Superconducting-like response in driven systems near the Mott transition
• Cavity engineering of Hubbard $U$ via phonon polaritons
• Vortex and soliton dynamics in particle-hole symmetric superfluids
• Parametric control of Meissner screening in light-driven superconductors
• Ephemeral Superconductivity Atop the False Vacuum
• Steady-states and response functions of the periodically driven O(N) scalar field theory
• Transient ordering in the Gross-Pitaevskii lattice subject to an energy quench within the disordered phase
• Pseudogap in electron-doped cuprates: thermal precursor to magnetism