Condensed Matter Theory Seminar: Shining Light on Transition Metal Oxides: Resilient Quasiparticles and the Unveiling of the Hidden Fermi Liquid

Strongly correlated metals exhibit anomalous transport properties

which have puzzled condensed matter physicists for many years.

They are characterized by large resistivities which exceed the Mott

Ioffe Reggel limit and large thermoelectric responses, which cannot

be explained in terms of standard Fermi liquid quasiparticles.

Dynamical Mean Field Theory (DMFT) calculations [1,2] carried out

on a doped one band Hubbard model suggest that this behavior

originate in the strong temperature dependence of thee parameters

of the underlying resilient (non-Landau) quasiparticles.

We will test these ideas by analyzing low energy optical spectroscopy

measurements in several prototypical compounds starting with

the archetypal correlated material Sesquioxide V2O3. We will also

show first principles, material specific, LDA+DMFT calculations

which are in very good agreement with the experiments [3].