Disorder in strongly correlated materials – Niels Bohr Institute - University of Copenhagen

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Disorder in strongly correlated materials

Strongly correlated materials are interesting because they display a rich assortment of electronic properties, most famously high temperature superconductivity. Often, these electronic properties are tuned by chemical doping, which changes the density of mobile holes or electrons.
An unwanted consequence of doping is disorder. In weakly correlated systems, the effects of disorder have been intensively studied for half a century, and are generally understood. Much less is known about impurities in strongly-correlated materials because of the difficulty of describing systems in which interactions cannot be treated perturbatively. In this talk, I will discuss our efforts to understand disorder in the Hubbard model, and will focus on two phenomena in particular: zero bias anomalies in strongly-disordered systems, and Anderson localization near the Mott transition.

Talk by Bill Atkinson