23.10.2019  10:45 a.m., room: S439 
Dr. Sanjeev Kumar
(Indian Institute of Science Education and Research Mohali, India)
Topological transitions in a model for proximityinduced superconductivity 

11.12.2019  10:45 a.m., room: S439 
Dr. Markus Eisenbach
(Oak Ridge National Laboratory, USA)
Large scale first principles materials calculations using multiple scattering theory 

22.1.2020  10:45 a.m., room: S439 
Prof. Dr. Dieter Vollhardt
(Universität Augsburg)
The art of modeling in solid state physics & the current state of DMFT The explanation of physical phenomena requires idealization and modeling. Models must be sufficiently simple, but not too simple. This strategy is illustrated in the case of ferromagnetism, where electronic correlations play an important role. They refer to effects which cannot be explained if the interaction acting on a particle is approximated by a static mean field. Here the Hubbard model is introduced as the minimal microscopic model describing correlated electrons. I will also introduce the generic meanfield theory for correlated electrons, the Dynamical MeanField Theory (DMFT), and discuss its foundations and current state. 

5.2.2020  10:45 a.m., room: S439 
Dr. Saikat Banerjee
Interacting Dirac materials 