“…( 1), giving t = 558 ± 50 meV, t /t = 0.49 ± 0.03, t /t = 0.5 ± 0.03, µ = -469 ± 90 meV and V = 75 meV. films by ARPES, a task previously thought not possible due to oxygen deficiency causing an insulating surface 17 . By growing oxygen-ordered Y123 films in situ, a clear surface representation of ortho-II band folding is made evident by ARPES.…”