Can strong correlation enhance superconductivity ? Part II
Starts 20 Apr 2004 12:00
Ends 20 Apr 2004 20:00
Central European Time
ICTP
Main Building Room 239
Strada Costiera, 11
I - 34151 Trieste (Italy)
In the seminar I will present recent results concerning the interplay of
strong correlations and superconductivity. In particular
I will show that there exist pairing channels orthogonal to strong
correlation, which are actually enhanced, even enormously, in the
proximity of a Mott metal-insulator transition. Since the results have
been obtained by the Dynamical Mean Field Theory (DMFT), I will first
briefly outline this technique. This will force me to discuss Anderson
impurity models which naturally arise within DMFT. I will try to argue
that these Anderson impurity models are not just a mere trick to solve
DMFT, but unveil a kind of local criticality which arises in many
strongly correlated metals near a Mott transition.
I will discuss how this criticality influences the onset of bulk
coherence, with particular emphasis on models for strongly correlated
superconductors.