Quasiparticle lifetimes in the charged Bose gas and the cuprates
journal contributionposted on 2006-04-03, 11:38 authored by A.S. Alexandrov, C.J. Dent
The scattering cross-section of a Coulomb potential screened by a charged Bose gas is calculated both above and below the Bose-Einstein condensation temperature, using the variable-phase method. In contrast with the case for the Bardeen-Cooper-Schrieffer superconductor, the screened scattering potential and quasiparticle lifetime are found to be very different in the superconducting and normal states. We apply the result to explain the appearance of a sharp peak in the angle-resolved photoemission spectra in some cuprates below the superconducting transition.
CitationALEXANDROV, A.S. and DENT, C.J., 2001. Quasiparticle lifetimes in the charged Bose gas and the cuprates. Journal of Physics Condensed Matter, 13(20), L417-L422.
NotesThis article was submitted for publication in the Journal of Physics: Condensed Matter [© IOP Publishing] and the definitive version is available at: http://dx.doi.org/10.1088/0953-8984/13/20/104