ALEXANDROV, A.S. and REYNOLDS, K., 2007. Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates. Physical Review B, 76(13), 132506 pp.1-4.
We amend ab initio strongly correlated band structures by taking into account the band-tailing phenomenon
in doped charge-transfer Mott-Hubbard insulators. We show that the photoemission from band tails accounts
for sharp “quasiparticle” peaks, rapid loss of their intensities in some directions of the Brillouin zone “Fermi
arcs” , and high-energy “waterfall” anomalies as a consequence of matrix-element effects of disorder-localized
states in the charge-transfer gap of doped cuprates.