Quasiparticle spectra in a tJ model with electron-phonon interactions

✍ Scribed by P. Horsch; A. Ramšak; P. Fulde

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 162 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)91283-1

✦ Synopsis

The change of the spectral properties of the single-particle Green's function due to a coupling to optical phonons is investigated for strongly correlated electrons. Except at the bottom of the band the quasiparticle pole is considerably broadened due to phonon-induced decay processes, and phonon-satellite structures appear. The overall coherent bandwidth is, however, not significantly changed. The phonon induced mass renormalization of a