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

Preprint English OPEN
Alexandrov, A. S. ; Reynolds, K. (2007)
  • Related identifiers: doi: 10.1103/PhysRevB.76.132506
  • Subject: Condensed Matter - Strongly Correlated Electrons | Condensed Matter - Superconductivity
    arxiv: Condensed Matter::Quantum Gases | Condensed Matter::Strongly Correlated Electrons | Condensed Matter::Materials Science | Condensed Matter::Superconductivity

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 "quasi-particle" 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-localised states in the charge-transfer gap of doped cuprates.
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