Non-equilibrium superconductivity in driven alkali-doped fullerides

Abstract

We investigate the formation of non-equilibrium superconducting states in driven alkali-doped fullerides A${}_3$C${}_{60}$. Within a minimal three-orbital model for the superconductivity of these materials, it was recently demonstrated theoretically that an orbital-dependent imbalance of the interactions leads to an enhancement of superconductivity at equilibrium [M. Kim et al. Phys. Rev. B 94, 155152 (2016)]. We investigate the dynamical response to a time periodic modulation of this interaction imbalance, and show that it leads to the formation of a transient superconducting state which survives much beyond the equilibrium critical temperature $T_c$. For a specific range of modulation frequencies, we find that the driving reduces superconductivity when applied to a superconducting state below $T_c$, while still inducing a superconducting state when the initial temperature is larger than $T_c$. These findings reinforce the relevance of the interaction-imbalance mechanism as a possible explanation of the recent experimental observation of light-induced superconductivity in alkali-doped fullerenes.

arXiv comment10 pages, 5 figures

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• Cavity-enhanced transport of charge
• Photoinduced $\eta$ Pairing in the Hubbard Model
• Light-enhanced electron-phonon coupling from nonlinear electron-phonon coupling
• Cooling quasiparticles in A${}_3$C${}_{60}$ fullerides by excitonic mid-infrared absorption
• $\eta$--paired superconducting hidden phase in photodoped Mott insulators
• Cavity-assisted mesoscopic transport of fermions: Coherent and dissipative dynamics
• Theoretical Understanding of Photon Spectroscopies in Correlated Materials In and Out of Equilibrium
• Resonant thermalization of periodically driven strongly correlated electrons
• Comparing the generalized Kadanoff-Baym ansatz with the full Kadanoff-Baym equations for an excitonic insulator out of equilibrium
• Dynamical Mean Field Theory, Density-Matrix Embedding Theory and Rotationally Invariant Slave Bosons: a Unified Perspective
• Non-equilibrium phenomena in superconductors probed by femtosecond time-domain spectroscopy
• Gutzwiller Hybrid Quantum-Classical Computing Approach for Correlated Materials
• Dynamics of photo-doped charge transfer insulators
• Rotationally invariant slave-boson and density matrix embedding theory: A unified framework and a comparative study on the 1D and 2D Hubbard Model
• Cooling by photo-doping $--$ Light-induced symmetry breaking in the Hubbard model
• Enhanced pairing susceptibility in a photo-doped two-orbital Hubbard model
• Photoinduced $\eta$-pairing at finite temperatures
• Hund's coupling driven photo-carrier relaxation in the two-band Mott insulator
• Possible light-induced superconductivity in a strongly correlated electron system
• From sudden quench to adiabatic dynamics in the attractive Hubbard model
• Transiently enhanced interlayer tunneling in optically driven high $T_c$ superconductors
• Charge stiffness and long-range correlation in the optically induced $\eta$-pairing state of the one-dimensional Hubbard model
• Dynamic Superconductivity Responses in Photo-excited Optical Conductivity and Nernst Effect
• Optical response of laser-driven charge-transfer complex described by Holstein-Hubbard model coupled to heat baths: Hierarchical equations of motion approach
• Cavity engineering of Hubbard $U$ via phonon polaritons
• Nonthermal excitonic condensation near a spin-state transition
• Nonthermal switching of charge order: dynamical slowing down and optimal control
• Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model
• Efficient Prediction of Time- and Angle-Resolved Photoemission Spectroscopy Measurements on a Non-Equilibrium BCS Superconductor
• Dynamical control of the conductivity of an atomic Josephson junction
• Unconventional orbital ordering and emergent dimensional reduction in fulleride superconductors
• Optical manipulation of bipolarons in a system with nonlinear electron-phonon coupling
• Universal approach to light driven "superconductivity" via preformed pairs
• Nature of superconducting fluctuation in photo-excited systems
• Ab-initio Simulations of Coherent Phonon-Induced Pumping of Carriers in Zirconium Pentatelluride
• Signature of preformed pairs in angle-resolved photoemission spectroscopy
• Nonequilibrium hysteretic phase transitions in periodically light-driven superconductors