Colloquia

Colloquium
Friday, September 15, 2000
4:00 PM
Physics Building, Room 204
Note special time.
Note special room.

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" Quantum criticality in the high temperature superconductors"


Professor Subir Sachdev , Yale University
[Host: Eugene Kolomeisky]
ABSTRACT:
I discuss the phases and critical points of quantum antiferromagnets in two dimensions and their relationship to the physical properties of the high temperature superconductors. Non-magnetic impurities are argued to be a sensitive probe of the wavefunction of the electron spins: I will describe recent experiments on such impurities and the theoretical insights they have provided on the interplay of antiferromagnetism and superconductivity.

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