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Quasiparticle lifetimes in the charged Bose gas and the cuprates

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journal contribution
posted on 03.04.2006, 11:38 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.

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ALEXANDROV, 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.

Publication date

2001

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This 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

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en

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