102 citations · 318 across the 28 of their papers we have counts for
4 papers · 1 filter
Competing orders in FeAs layers
J. Lorenzana, G. Seibold, C. Ortix +1
Using the unrestricted Hartree-Fock approximation and Landau theory we identify possible phases competing with superconductivity in FeAs layers. We find that close to half-filling…
Charge instabilities and electron-phonon interaction in the Hubbard-Holstein model
A. Di Ciolo, J. Lorenzana, M. Grilli +1
We consider the Hubbard-Holstein model in the adiabatic limit to investigate the effects of electron-electron interactions on the electron-phonon coupling. To this aim we compute a…
On the contribution of nearly-critical spin and charge collective modes to the Raman spectra of high-Tc cuprates
S. Caprara, C. Di Castro, T. Enss +1
We discuss how Raman spectra are affected by nearly-critical spin and charge collective modes, which are coupled to charge carriers near a stripe quantum critical point. We show th…
Low-energy signatures of charge and spin fluctuations in Raman and optical spectra of the cuprates
S. Caprara, C. Di Castro, T. Enss +1
We calculate the optical and Raman response within a phenomenological model of fermion quasiparticles coupled to nearly critical collective modes. We find that, whereas critical sc…