Simulation of time-resolved electron-phonon scattering on a Dirac cone

ORAL

Abstract

Ultrafast spectroscopy is a powerful tool for studying the dynamical properties of quantum materials driven out of equilibrium. The relaxation dynamics of the non-equilibrium state can provide insights into the properties of the elementary scattering process and many-body interactions present in equilibrium. Using the Keldysh formalism we simulate time- and angle-resolved photoemission spectroscopy on a Dirac cone to capture the quantized relaxation processes of electrons coupled to optical phonons. Including retarded electron-phonon interactions, the simulation naturally captures the appearance of a direct excitation peak at an energy set by the frequency of the pump pulse and the delayed appearance of a secondary non-thermal peak above the Fermi level due to electron-phonon scattering as observed in an experiment performed on graphite.

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Presenters

  • Benjamin Nosarzewski

    • Stanford University
    • Physics, Stanford University

Authors

  • Benjamin Nosarzewski

    • Stanford University
    • Physics, Stanford University

  • Arthur K Mills

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia

  • MengXing Na

    • University of British Colombia
    • Physics and Astronomy, University of British Columbia

  • Fabio Boschini

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Matteo Michiardi

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Ryan P Day

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Elia Razzoli

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Alexander Sheyerman

    • University of British Colombia
    • Physics and Astronomy, University of British Columbia

  • Michael Schneider

    • University of British Colombia
    • Physics and Astronomy, University of British Columbia

  • Giorgio Levy

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Sergey Zhdanovich

    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Alexander Kemper

    • North Carolina State University
    • Department of Physics, North Carolina State University
    • Physics, North Carolina State University

  • David J Jones

    • University of British Columbia
    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Andrea Damascelli

    • University of British Columbia
    • University of British Colombia
    • QMI, University of British Columbia
    • Physics and Astronomy, University of British Columbia
    • Stuart Blussom Quantum Matter Institute, University of British Columbia
    • Quantum Matter Institute, University of British Columbia
    • Department of Physics & Astronomy, University of British Columbia

  • Thomas Devereaux

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • Physics, Stanford University
    • SLAC and Stanford University
    • Institute for Materials and Energy Science, Stanford
    • SIMES, SLAC National Accelerator Lab
    • SLAC National Accelerator Laboratory and Stanford University, Stanford Institute for Materials and Energy Sciences
    • SLAC, Stanford
    • SIMES, SLAC, and Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University