Modeling lattice interaction in non-equilibrium pump-probe experiments
ORAL
Abstract
In past years, advances is experimental laser technology have allowed for the study of materials at ever shorter timescales. In these pump-probe experiments, after excitation by the pulse, the systems evolve back to equilibrium through its inherent relaxation processes, which are typically temporally separated by their characteristic timescales. Among the slower processes are the electron-phonon interactions, which carry the majority of the energy transferred to the electrons away into the lattice. We present a direct calculation of the characteristic timescales for systems driven out of equilibrium via a short pulse and allowed to relax via electron-phonon interactions. We make a direct connection between the observable timescales and the microscopic specifics, both via decay rates and oscillations in various photon-spectroscopies.
–
Authors
Alexander Kemper
Stanford Institute for Materials and Energy Science
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory
Michael Sentef
Stanford Institute for Materials and Energy Science
Brian Moritz
SIMES, SLAC National Accelerator Laboratory and Stanford University
Stanford Institute for Materials and Energy Science
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
Tom Devereaux
Department of Physics, Stanford University, Stanford
SIMES, SLAC National Accelerator Laboratory and Stanford University
Stanford Institute for Materials and Energy Science
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory
Stanford University and SLAC National Accelerator Laboratory
