Unusual photoemission resonances of oxygen-dopant induced states in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$

P. Richard, Z. -H. Pan, M. Neupane +7

We have performed an angular-resolved photoemission study of underdoped, optimally doped and overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ samples using a wide photon energy range (15…