Ultrafast dynamics of electron-phonon coupling in a metal

Abstract

In the past decade, the advent of time-resolved spectroscopic tools has provided a new ground to explore fundamental interactions in solids and to disentangle degrees of freedom whose coupling leads to broad structures in the frequency domain. Time- and angle-resolved photoemission spectroscopy (tr-ARPES) has been utilized to directly study the relaxation dynamics of a metal in the presence of electron-phonon coupling. The effect of photo-excitations on the real and imaginary part of the self-energy as well as the time scale associated with different recombination processes are discussed. In contrast to a theoretical model, the phonon energy does not set a clear scale governing quasiparticle dynamics, which is also different from the results observed in a superconducting material. These results point to the need for a more complete theoretical framework to understand electron-phonon interaction in a photo-excited state.

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References in corpus (13)

• Intrinsic and Extrinsic Performance Limits of Graphene Devices on SiO2
• Double Exchange Alone Does Not Explain the Resistivity of $L{a}_{1-x}S{r}_{x}Mn{O}_3$
• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Tracking Cooper Pairs in a Cuprate Superconductor by Ultrafast Angle-Resolved Photoemission
• Electron-phonon coupling and electron self-energy in electron-doped graphene: calculation of angular resolved photoemission spectra
• Nodal quasiparticle meltdown in ultra-high resolution pump-probe angle-resolved photoemission
• Energy dissipation in the time domain governed by bosons in a correlated material
• Vacuum space charge effect in laser-based solid-state photoemission spectroscopy
• Inequivalence of Single-Particle and Population Lifetimes in a Cuprate Superconductor
• Ultrafast quenching of electron-boson interaction and superconducting gap in a cuprate superconductor
• Electron-Phonon Coupling in Highly-Screened Graphene
• Nonequilibrium Electron Dynamics in a Solid with a Changing Nodal Excitation Gap
• Interplay of superconductivity and bosonic coupling in the peak-dip-hump structure of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Cited by in corpus (5)

• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Finite-temperature density-matrix renormalization group method for electron-phonon systems: Thermodynamics and Holstein-polaron spectral functions
• Self-energy dynamics and mode-specific phonon threshold effect in a Kekulé-ordered graphene
• Exact solution of two simple non-equilibrium electron-phonon and electron-electron coupled systems: the atomic limit of the Holstein-Hubbard model and the generalized Hatsugai-Komoto model
• Phonon-induced disorder in dynamics of optically pumped metals from non-linear electron-phonon coupling