Disorder and Field Driven Superconductor
Insulator Transition
Nandini Trivedi
The main questions addressed in the talk will
be: What is the nature of the insulating phase in conventional highly
disordered superconductors? What is the mechanism for the superconductor to insulator
transition? How do the theoretical insights help understand two puzzling
experiments: (a) pseudogaps and vanishing of
coherence peaks in the disorder driven transition, and (b) origin of low energy
states in the Zeeman field driven transition, both
probed by scanning tunneling spectroscopy.