Journal article

Nonequilibrium dynamical mean-field simulation of inhomogeneous systems

  • Eckstein, Martin Max Planck Research Department for Structural Dynamics, University of Hamburg-CFEL, Hamburg, Germany
  • Werner, Philipp Department of Physics, University of Fribourg, Switzerland
    20.08.2013
Published in:
  • Physical Review B. - 2013, vol. 88, no. 7, p. 075135
English We extend the nonequilibrium dynamical mean field (DMFT) formalism to inhomogeneous systems by adapting the “real-space” DMFT method to Keldysh Green's functions. Solving the coupled impurity problems using strong-coupling perturbation theory, we apply the formalism to homogeneous and inhomogeneous layered systems with strong local interactions and up to 39 layers. We study the diffusion of doublons and holes created by photoexcitation in a Mott insulating system, the time-dependent build-up of the polarization and the current induced by a linear voltage bias across a multilayer structure, and the photoinduced current in a Mott insulator under bias.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/303334
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