Theory of time-resolved spectral function in high-temperature superconductors with bosonic modes

Abstract

We develop a three-temperature model to simulate the time dependence of electron and phonon temperatures in high-temperature superconductors displaying strong anistropic electron-phonon coupling. This model not only takes the tight-binding band structure into account, but also is valid in superconducting state. Based on this model, we calculate the time-resolved spectral function via the double-time Green's functions. We find that the dip-hump structure evolves with the time delay. More interestingly, new phononic structures are obtained when the phonons are excited by a laser field. This signature may serve as a direct evidence for electron-vibration mode coupling.

5 pages, 3 figures

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Cited by in corpus (7)

• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Lattice and surface effects in the out-of-equilibrium dynamics of the Hubbard model
• Ultrafast spectroscopy of quasiparticle dynamics in cuprate superconductors
• Theory of ultrafast quasiparticle dynamics in high-temperature superconductors: Pump fluence dependence
• Efficient Prediction of Time- and Angle-Resolved Photoemission Spectroscopy Measurements on a Non-Equilibrium BCS Superconductor
• Momentum-Resolved Electronic Relaxation Dynamics in D-wave Superconductors
• Time-resolved Photoluminescence in Terahertz-driven Hybrid Systems of Plasmons and Excitons