Fermi Surface Reconstruction in a Cuprate Superconductor
Event details
| Date | 16.05.2014 |
| Hour | 14:15 |
| Speaker | Prof. Eric Hudson, Physics Dept., The Pennsylvania State University |
| Location | |
| Category | Conferences - Seminars |
Despite nearly three decades of research, high temperature superconductivity in the cuprates still holds many mysteries. In this talk I will 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 superconductivity and pseudogap -- and on our efforts to disentangle their effects in the system by atomic resolution scanning tunneling microscopy. In recent doping dependent studies of the Fermi surface we observed the abrupt disappearance of all antinodal states slightly below optimal doping, signifying a Fermi surface reconstruction and zero-field quantum phase transition in striking proximity to the maximum superconducting transition temperature.
Surprisingly, this major reorganization of the system’s underlying electronic structure has no impact on the smoothly evolving pseudogap.
Surprisingly, this major reorganization of the system’s underlying electronic structure has no impact on the smoothly evolving pseudogap.
Practical information
- Informed public
- Free
Organizer
- ICMP (Arnaud Magrez and Raphaël Butté)