Department of Physics
Condensed Matter Seminar

The new Fe-based superconductors have occasioned excitement because transition temperatures are high and it is hoped that comparisons to cuprates can lead to new insights on the essential ingredients to high temperature superconductivity. I'll discuss the simplest approaches to the superconductivity problem within the conventional weak coupling spin fluctuation model, show why two pairing channels may be nearly degenerate, and explain why highly anisotropic A1g states are probably favored. Experiments Indicating a possible gapped-antinodal crossover in these systems may be understood with a phenomenological treatment of disorder.