SEMINAR: Andreas Weh

You are cordially invited to the SCL seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 25th October 2018 at 14:00 in the library reading room “Dr. Dragan Popović” of the Institute of Physics Belgrade. The talk entitled

“Charge reconstruction and Friedel sum rule in heterostructures”

will be given by Andreas Weh from the Institute of physics in Augsburg.

The abstract of the talk:

We present a self-consistent method for using real space dynamical mean-field theory (r-DMFT) to address local and intersite Coulomb interactions in heterostrcutures. The local in-plane many-body problem is solved using the continuous-time quantum Monte Carlo approach for the Hubbard model in hybridization expansion (CT-Hyb). The mean-field interlayer Coulomb potential generates a classical electrostatic problem solved by the Poisson equation for the multilayered geometry. Using this method we study half-metallic heterostructures made of coupled layers of single-band Hubbard models. A similar setup for non-magnetic heterostructures turns out to be a useful playground to investigate the validity of the Friedel sum rule.