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

A. S. Alexandrov·K. Reynolds
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Abstract

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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A. S. Alexandrov, K. Reynolds. 2007-03-31. Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates. https://doi.org/10.1103/physrevb.76.132506

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