144 citations · 538 across the 13 of their papers we have counts for
13 papers
Self-energy enhancements in doped Mott insulators
J. Merino, O. Gunnarsson, G. Kotliar
We analyze enhancements in the magnitude of the self-energy for electrons far away from the Fermi surface in doped Mott insulators using the dynamical cluster approximation to the…
Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
O. Gunnarsson, T. Schäfer, J. P. F. LeBlanc +5
We demonstrate how to identify which physical processes dominate the low-energy spectral functions of correlated electron systems. We obtain an unambiguous classification through a…
Pseudogap and singlet formation in cuprate and organic superconductors
J. Merino, O. Gunnarsson
The pseudogap phase occurring in cuprate and organic superconductors is analyzed based on the dynamical cluster approximation (DCA) approach to the Hubbard model. A cluster embedde…
Dispersion of incoherent spectral features in systems with strong electron-phonon coupling
O. Rösch, O. Gunnarsson
We study (inverse) photoemission from systems with strong coupling of doped carriers to phonons. Using an adiabatic approximation, we develop a method for calculating spectra. This…
Simple model for scanning tunneling spectroscopy of noble metal surfaces with adsorbed Kondo impurities
J. Merino, O. Gunnarsson
A simple model is introduced to describe conductance measurements between a scanning tunneling microscope (STM) tip and a noble metal surface with adsorbed transition metal atoms w…
Electron-phonon interaction in the t-J model
O. Rösch, O. Gunnarsson
We derive a t-J model with electron-phonon coupling from the three-band model, considering modulation of both hopping and Coulomb integrals by phonons. While the modulation of the…