Highlight Seminar

Understanding Strong Electronic Correlations: Recent Advances from Dynamical Mean-Field Theory

Prof Antoine Georges

Collège de France, Paris and Flatiron Institute, Simons Foundation, New York

Wednesday 17th April 2019
Time: 16:00pm-18:00pm
Venue: Room 1.11, Franklin-Wilkins Building, Kings College London
Contact: Faith Goodwin

From copper-oxide superconductors to twisted bilayer graphene, materials with strong correlations have focused enormous attention over several decades. Solid-state chemistry, new elaboration techniques and improved experimental probes are constantly providing us with examples of novel materials with surprising electronic properties. A new frontier of the field has also opened up with the study of ultra-cold atomic gases in optical lattices.

In this lecture, I will review some salient physical aspects of strong electronic correlations. I will emphasize that the classic paradigm of solid-state physics, in which electrons form a gas of wave-like quasiparticles, must be seriously revised for strongly correlated materials. Instead, a description accounting for both atomic-like excitations in real-space and quasiparticle excitations in momentum space is requested. I will review how Dynamical Mean-Field Theory (DMFT) fulfills this goal. This approach has led to significant advances in our understanding of materials with strong electronic correlations.

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