Universal waterfalls-like feature in the spectral function of high temperature superconductors

Abstract

By performing high resolution angle resolved photoemission spectroscopy (ARPES) experiments on four different families of p-type cuprates, over an energy range much bigger than investigated before, we report the discovery of a universal high energy anomaly in the spectral function. This anomaly is characterized by the presence of two new high energy scales $E_1=0.35-0.45$eV and $E_2=0.8-0.9$eV and the pinning of the main ARPES spectral function along the boundary of a diamond in the momentum space. This anomaly unveils a missing link between the doped oxygen holes and the quasiparticles, providing a full range of relevant interaction to the high Tc problem.

to be published in the proceeding of the M2S-HTS - July 2006

References in corpus (1)

• Physics of cuprates with the two-band Hubbard model - The validity of the one-band Hubbard model

Cited by in corpus (6)

• "Waterfalls" phenomenon in superconducting cuprates
• "Waterfalls" in cuprates
• Phase diagram and single-particle spectrum of CuO${}_2$ layers within a variational cluster approach to the 3-band Hubbard model
• Excitation energy map of the high-energy dispersion anomalies in cuprates
• Universality of the single-particle spectra of cuprate superconductors
• Examination of the claim by Loram and Tallon that the energy-resolved STM results, in their apparent inhomogeneity, misrepresent the true bulk behaviour of the HTSC cuprates