Collapse of the Normal State Pseudogap at a Lifshitz Transition in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Cuprate Superconductor

S. Benhabib, A. Sacuto, M. Civelli +9

We report a fine tuned doping study of strongly overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ single crystals using electronic Raman scattering. Combined with theoretical calculations, w…