Theory of the waterfall phenomenon in cuprate superconductors

Abstract

Based on exact diagonalization and variational cluster approximation calculations we study the relationship between charge transfer models and the corresponding single band Hubbard models. We present an explanation for the waterfall phenomenon observed in angle resolved photoemission spectroscopy (ARPES) on cuprate superconductors. The phenomenon is due to the destructive interference between the phases of the O2p orbitals belonging to a given Zhang-Rice singlet and the Bloch phases of the photohole which occurs in certain regions of k-space. It therefore may be viewed as a direct experimental visualisation of the Zhang-Rice construction of an effective single band model for the CuO2 plane.

11 pages, 9 Postscript figures

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Cited by in corpus (5)

• A BCS-BEC crossover in the extended Falicov-Kimball model: Variational cluster approach
• Characterizing the three-orbital Hubbard model with determinant quantum Monte Carlo
• Pseudogap in the chain states of YBCO
• The high-energy anomaly in ARPES spectra of the cuprates-many body or matrix element effect?
• Magnon Splitting Induced by Charge Transfer in the Three-Orbital Hubbard Model