The phase diagrams of the high temperature superconductors
by
Subir Sachdev(Harvard)
→
Europe/Stockholm
FA31
FA31
Description
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.
