Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates

2009-02-19T13:22:00Z (GMT) by A.S. Alexandrov Kimberley Reynolds
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.

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