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SUMMARY:Fermi Surface Reconstruction in a Cuprate Superconductor
DTSTART:20140516T141500
DTSTAMP:20260413T090950Z
UID:6d6dd26ba7ffa86d2a50ee44ceefc02e8cf1c43fc6dac096329bcf6b
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Eric Hudson\, Physics Dept.\, The Pennsylvania State Uni
 versity\nDespite nearly three decades of research\, high temperature super
 conductivity in the cuprates still holds many mysteries. In this talk I wi
 ll introduce the subject by giving an overview of what we do know and what
  big questions remain to be resolved. I will then focus on one particular 
 issue -- the unclear relationship between the overlapping phases of superc
 onductivity and pseudogap -- and on our efforts to disentangle their effec
 ts in the system by atomic resolution scanning tunneling microscopy. In re
 cent doping dependent studies of the Fermi surface we observed the abrupt 
 disappearance of all antinodal states slightly below optimal doping\, sign
 ifying a Fermi surface reconstruction and zero-field quantum phase transit
 ion in striking proximity to the maximum superconducting transition temper
 ature.\nSurprisingly\, this major reorganization of the system’s underly
 ing electronic structure has no impact on the smoothly evolving pseudogap.
LOCATION:PH L1 503 (Aquarium) http://plan.epfl.ch/?room=PHL1503
STATUS:CONFIRMED
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