Mapping of the unoccupied states and relevant bosonic modes via the time dependent momentum distribution

Abstract

The unoccupied states of complex materials are difficult to measure, yet play a key role in determining their properties. We propose a technique that can measure the unoccupied states, called time-resolved Compton scattering, which measures the time-dependent momentum distribution (TDMD). Using a non-equilibrium Keldysh formalism, we study the TDMD for electrons coupled to a lattice in a pump-probe setup. We find a direct relation between temporal oscillations in the TDMD and the dispersion of the underlying unoccupied states, suggesting that both can be measured by time-resolved Compton scattering. We demonstrate the experimental feasibility by applying the method to a model of MgB${}_2$ with realistic material parameters.

References in corpus (9)

• All-optical Compton gamma-ray source
• Dynamical phase transition in correlated fermionic lattice systems
• Ultrafast transient generation of spin-densitywave order in the normal state of BaFe2As2 driven by coherent lattice vibrations
• Nonthermal steady states after an interaction quench in the Falicov-Kimball model
• Quenching Bloch oscillations in a strongly correlated material
• Effect of strong correlations on the high energy anomaly in hole- and electron-doped high-Tc superconductors
• New theoretical approaches for correlated systems in nonequilibrium
• Direct observation of the Fermi surface in an ultracold atomic gas
• Critical temperature of MgB${}_2$ ultrathin superconducting films: BCS model calculations in tight-binding approximation

Cited by in corpus (33)

• Nonequilibrium dynamical mean-field theory and its applications
• Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
• Theory of light-enhanced phonon-mediated superconductivity
• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Examining electron-boson coupling using time-resolved spectroscopy
• Eigenstate thermalization and quantum chaos in the Holstein polaron model
• Energy dissipation in the time domain governed by bosons in a correlated material
• Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation
• Real-time decay of a highly excited charge carrier in the one-dimensional Holstein model
• Phonon-enhanced relaxation and excitation in the Holstein-Hubbard model
• Floquet band structure of a semi-Dirac system
• Effect of dynamical spectral weight redistribution on effective interactions in time-resolved spectroscopy
• Quadratic band touching points and flat bands in two-dimensional topological Floquet systems
• Review of the theoretical description of time-resolved angle-resolved photoemission spectroscopy in electron-phonon mediated superconductors
• Floquet Hofstadter Butterfly on the Kagome and Triangular Lattices
• Tracing the nonequilibrium topological state of Chern insulators
• General principles for the non-equilibrium relaxation of populations in quantum materials
• Spectral properties from Matsubara Green's function approach - application to molecules
• Gauge invariance in the theoretical description of time-resolved angle-resolved pump/probe photoemission spectroscopy
• Adiabatic Preparation of a Correlated Symmetry-Broken Initial State with the Generalized Kadanoff--Baym Ansatz
• Thermalization after photoexcitation from the perspective of optical spectroscopy
• A comparative study of nonequilibrium insulator-to-metal transitions in electron-phonon systems
• Nonequilibrium Electron Dynamics In Pump-Probe Spectroscopy: Role Of Excited Phonon Populations
• Coherent Modulation of Quasiparticle Scattering Rates in a Photoexcited Charge-Density-Wave System
• Nature of Bosonic Excitations revealed by high-energy charge carriers
• What do the two times in two-time correlation functions mean for interpreting tr-ARPES?
• Relationship between Population Dynamics and the Self-Energy in Driven Non-Equilibrium Systems
• Efficient computation of the second-Born self-energy using tensor-contraction operations
• Real-time evolution of static electron-phonon models in time-dependent electric fields
• Analysis of time-resolved single-particle spectrum on the one-dimensional extended Hubbard model
• Floquet states in (LaNiO${}_3$)${}_2$/(LaAlO${}_3$)${}_N$ heterostructures grown along the (111) direction
• Energy flow during relaxation in an electron-phonon system with multiple modes: A nonequilibrium Green's function study
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy