Normal state properties of an interacting large polaron gas
Dipartimento di Scienze Fisiche,
Università di Salerno, 84081 Baronissi (Salerno), Italy
2 Dipartimento di Scienze Fisiche, Università di Napoli 80125 Napoli, Italy
Published online: 15 April 1999
A simple approach to the many-polaron problem for both weak and intermediate electron-phonon coupling and valid for densities much smaller than those typical of metals is presented. Within the model the total energy, the collective modes and the single-particle properties are studied and compared with the available theories. It is shown the occurrence of a charge density wave instability in the intermediate coupling regime.
PACS: 71.38.+i – Polarons and electron phonon interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999