120 citations · 163 across the 4 of their papers we have counts for
8 papers
Polaronic behavior of undoped high-Tc cuprates
O. Rösch, O. Gunnarsson, X. J. Zhou +6
We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calc…
Apparent electron-phonon interaction in strongly correlated systems
O. Rösch, O. Gunnarsson
We study the interaction of electrons with phonons in strongly correlated solids, having high-T_c cuprates in mind. Using sum-rules, we show that the apparent strength of this inte…
Field-doping of C60 crystals: A view form theory
Erik Koch, Olle Gunnarsson, Samuel Wehrli +1
The proposal of using the field-effect for doping organic crystals has raised enormous interest. To assess the feasibility of such an approach, we investigate the effect of a stron…
Superconductivity in molecular solids with Jahn-Teller phonons
J. E. Han, O. Gunnarsson, V. H. Crespi
We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and establish the existen…
Screening of a point charge: a fixed-node diffusion Monte Carlo study
Erik Koch, Olle Gunnarsson, Richard M. Martin
We study the static screening in a Hubbard-like model using fixed-node diffusion Monte Carlo. We find that the random phase approximation is surprisingly accurate even for metallic…
Fixed-node DMC for Fermions on a lattice: Application to the doped Fullerides
Erik Koch, Olle Gunnarsson, Richard M. Martin
Fullerides are crystals made from C60 molecules. When doped with alkali metals the valence electrons of the alkali atoms are transfered to the C60 molecules. We show how to set up…