The strange quantum physics of the high temperature superconductors
The strange quantum physics of the high temperature superconductors
Subir Sachdev, Harvard University
Date and time:
Wed, Mar 11, 2020 - 4:00pm
Refreshments at 3:40pm
Location:
Hasbrouck 124
Category:
Departmental Colloquium
Speaker link:
Subir Sachdev
Abstract:
All high-temperature superconductors exhibit a “strange metal” state above the critical temperature for superconductivity. In the strange metal, electrical and thermal currents are not carried by individual particles, but collectively by an entangled quantum many-body state. In the hole-doped cuprate superconductors, there is now increasing evidence that the strange metal originates from a novel quantum phase transition at zero temperature, not controlled by the breaking of any symmetry. I will describe how the ideas of quantum particle fractionalization and emergent gauge fields are helping understand such states of quantum matter.
Department of Physics