The phase diagrams of the high temperature superconductors

by Subir Sachdev (Harvard)

Wednesday 29 Jun 2011, 15:00 → 16:00 Europe/Stockholm

FA31

The last three decades have witnessed the discovery of many new superconductors, with properties dramatically different from the conventional low temperature superconductors described by the Bardeen-Cooper-Schrieffer theory. These new superconductors can have much higher critical temperature, and all display antiferromagnetism in their phase diagrams. I will highlight important experimental discoveries of the past two years, and argue that they support a unifying theory and phase diagram for these new superconductors. The quantum critical point describing the loss of antiferromagnetism in a metal plays a central role in this theory.