Thermoelectric properties from time-dependent density functional theory

ORAL

Abstract

The goal of this work is to develop computational methods to predict electrical and thermal transport properties from ab-initio quantum simulations. We apply a microscopic theory of quantum transport to obtain conductivities from first principles. The new methods, based on simulating real time electron dynamics, are able to access larger systems than the standard Kubo-Greenwood approach and are also applicable in non-linear regimes. We investigate liquid metallic hydrogen at 1400 K and 400 GPa, in order to see if there is nonlinear behavior under conditions that are typically accessible by experiments.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344." LDRD: Quantum Non-Equilibrium Dynamics of Electronic Transport in Nonlinear Regimes [18-ERD-031 2018] RELEASE:LLNL-POST-773049

Presenters

  • Alicia Welden

    • Lawrence Livermore Natl Lab

Authors

  • Alicia Welden

    • Lawrence Livermore Natl Lab
  • Xavier Andrade

    • Lawrence Livermore Natl Lab
  • Alfredo A. Correa

    • Lawrence Livermore Natl Lab