Electron Stopping Power Simulated by Time-dependent Density Functional Theory

ORAL

Abstract

We report results of a study of electron energy loss in a solid using time-dependent density functional theory. The scattering electron is modeled by a wave packet that enters a crystalline thin film with a predetermined velocity. The propagation of the wave packet is simulated in real time and real space. The electron stopping power is extracted from the energy loss of the wave packet during the time propagation through the material. Results for thin Si films will be presented.

*This work was supported in part by AFOSR MURI (Grant No F-49620-99-1-0289), NSF (Grant No ECCS0925422) and DOE (Grant No DE-FG02-09ER46554).

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Authors

  • Jia-An Yan

    • Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235

  • Kalman Varga

    • Vanderbilt University
    • Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235
    • Vanderbilt University Department of Physics and Astronomy

  • Sokrates Pantelides

    • Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235
    • Vanderbilt University, Oak Ridge National Laboratory
    • Vanderbilt Univ.
    • Department of Physics and Astronomy, Vanderbilt University
    • Vanderbilt University