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