180 citations · 1.3k across the 59 of their papers we have counts for
6 papers · 2 filters
Effects of the electron-phonon coupling near and within the insulating Mott phase
C. A. Perroni, V. Cataudella, G. De Filippis +1
The role of the electron-phonon interaction in the Holstein-Hubbard model is investigated in the metallic phase close to the Mott transition and in the insulating Mott phase. The m…
Effects of electron-phonon coupling range on the polaron formation
C. A. Perroni, V. Cataudella, G. De Filippis +1
The polaron features due to electron-phonon interactions with different coupling ranges are investigated by adopting a variational approach. The ground-state energy, the spectral w…
Transport properties in manganite thin films
S. Mercone, C. A. Perroni, V. Cataudella +10
The resistivity of thin films () is investigated in a wide temperature range. The comparison of the resistivities is made among films grown by di…
A variational approach to the optimized phonon technique for electron-phonon problems
V. Cataudella, G. De Filippis, F. Martone +1
An optimized phonon approach for the numerical diagonalization of interacting electron-phonon systems is proposed. The variational method is based on an expansion in coherent state…
Polaron features for long-range electron-phonon interaction
C. A. Perroni, V. Cataudella, G. De Filippis
The polaron features for long-range electron-phonon interaction are investigated by extending a variational approach previously proposed for the study of systems with local couplin…
Polaron formation for a non-local electron-phonon coupling: A variational wave-function study
C. A. Perroni, E. Piegari, M. Capone +1
We introduce a variational wave-function to study the polaron formation when the electronic transfer integral depends on the relative displacement between nearest-neighbor sites gi…