University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Thursday, December 4th 2014
1:25 pm:
Condensed Matter Seminar in 210 Physics
Speaker: Gabriel Kotliar, Rutgers University
Subject: Layered Iron Pnictides and Chalchogenides as Hunds metals a new class of strongly correlated materials.
CANCELLED--SPEAKER UNABLE TO TRAVEL TO MN----

The recent discovery of superconductivity in iron based materials are a subject of intensive investigations and controversy. They serve as an excellent test of the current capabilities for predicting the physical properties of correlated materials. We will describe some of the LDA+DMFT based Studies for various spectroscopies: optical conductivity, photoemission and inelastic neutron scattering and will compare them with experiments. We will argue that these materials are Hunds metals, a new class of strongly correlated materials where the correlations are controlled by the strength of the Hunds rule coupling J rather than by the Hubbard U, and will place these materials in the broader context of searching for other high temperature superconductors.

Faculty Host: Rafael Fernandes

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