A Special Colloquium in Memory of Tal Kirzhner - On the pseudogap regime of the high temperature superconductors

Speaker:Prof. Gad Koren
Location:Lidow Rosen Auditorium (323)
Abstract:A basic overview will be given on the various experimental observations in the
pseudogap regime of the cuprate superconductors. Even after 24 years, the pseudogap
phase is not yet fully understood, and there are two very different views on the origin of
this phase. In one view, the pseudogap phase is modeled as a precursor to
superconductivity. This model presumes the existence of uncorrelated pre-formed pairs
of electrons above the superconducting transition temperature Tc, which become phase
correlated (and therefore superconducting) at Tc. In the other view, the pseudogap
phase is either a competing order to superconductivity or a phenomenon which has
nothing to do with superconductivity. All these will be presented and discussed briefly in
view of the experimental data, and at the end, Tal’s contribution to this field will be
explained and highlighted.