Spectroscopic evidence for preformed Cooper pairs in the pseudogap phase of cuprates

M. Shi, A. Bendounan, E. Razzoli +15

Angle-resolved photoemission on underdoped La${}_{1.895}$Sr${}_{0.105}$CuO${}_4$ reveals that in the pseudogap phase, the dispersion has two branches located above and below the Fermi le…