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Lehrstuhlseminar Theoretische Physik III


24.10.2018 11:00, Raum: S-439
Priv.-Doz. Dr. Marcus Kollar
Foundations of dynamical mean-field theory
31.10.2018 11:00, Raum: S-439
Dr. Alexey Shorikov (Institute of Metal Physics, Russian Academy of Sciences, Yekaterinburg)
Phase transition under pressure in Low Earth's mantle Iron compounds: DFT+DMFT study
7.11.2018 11:00, Raum: S-439
Dr. Saikat Banerjee
Interactions: From Dirac Matter to Cuprates
14.11.2018 11:00, Raum: S-439
Dr. Corentin Morice
Bismuth-sulphur superconductors, quantum bicriticality and weak-to-strong topological phase transition

In this talk, I will present two different past projects and my current work. In the first part, I will discuss bismuth-sulphur superconductors, which attracted interest due to their proximity to a charge density wave instability, as well as phase coexistence of magnetism and superconductivity. This, along with the fact that superconductivity is confined to two-dimensional layers, suggested the possibility of an unconventional superconducting mechanism. We showed using ab-initio methods that indeed conventional superconductivity could not explain the transitions temperatures obtained experimentally. In the second part, I will present work on a phenomenological model where two order parameters coupled biquadratically have a common quantum critical point. We showed that the susceptibilities corresponding to the two order parameters have the same qualitative form at low temperature even when they are different in the absence of coupling. Finally, I will present my current work on ZrTe5, a material close to the boundary between weak and strong topological insulating phases.

21.11.2018 11:00, Raum: S-439
Dr. Yi Zhang (Department of Physics & Astronomy, Louisiana State University, Baton Rouge)
Localization in Energy Materials
28.11.2018 11:00, Raum: S-439
M.Sc. Marc Alexander
Thema wird noch bekannt gegeben
5.12.2018 11:00, Raum: S-439
Dr. Andreas Sinner
Thema wird noch bekannt gegeben
12.12.2018 11:00, Raum: S-439
M.Sc. Stefan Gorol
Thema wird noch bekannt gegeben
19.12.2018 11:00, Raum: S-439
Prof. Dr. Dieter Vollhardt
From infinite dimensions to real materials
23.1.2019 11:00, Raum: S-439
Dr. Patrick Seiler
Anti-localization in oxide heterostructures