Nodal Quasiparticle Lifetimes in Cuprate Superconductors

Simple item page
dc.creatorDahm, T.
dc.creatorHirschfeld, P. J.
dc.creatorScalapino, D. J.
dc.creatorZhu, L.
dc.date2005-07-29
dc.date2005-12-19
dc.date.accessioned2026-07-07T06:41:27Z
dc.date.available2026-07-07T06:41:27Z
dc.descriptionA new generation of angular-resolved photoemission spectroscopy (ARPES) measurements on the cuprate superconductors offer the promise of enhanced momentum and energy resolution. In particular, the energy and temperature dependence of the on-shell nodal (k_x=k_y) quasiparticle scattering rate can be studied. In the superconducting state, low temperature transport measurements suggest that one can describe nodal quasiparticles within the framework of a BCS d-wave model by including forward elastic scattering and spin-fluctuation inelastic scattering. Here, using this model, we calculate the temperature and frequency dependence of the on-shell nodal quasiparticle scattering rate in the superconducting state which determines the momentum width of the ARPES momentum distribution curves. For a zero-energy quasiparticle at the nodal momentum k_N, both the elastic and inelastic scattering rate show a sudden decrease as the temperature drops below Tc, reflecting the onset of the gap amplitude. At low temperatures the scattering rate decreases as T^3 and approaches a zero temperature value determined by the elastic impurity scattering. For T>T_c, we find a quasilinear dependence on T. At low reduced temperatures, the elastic scattering rate for the nodal quasiparticles exhibits a quasilinear increase at low energy which arises from elastic scattering processes. The inelastic spin-fluctuation scattering leads to a low energy omega^3 dependence which, for omega>~Delta_0, crosses over to a quasilinear behavior.
dc.description8 pages, 7 figures, minor revisions
dc.identifierhttps://arxiv.org/abs/cond-mat/0507723
dc.identifierhttp://arxiv.org/abs/cond-mat/0507723
dc.identifierPhys. Rev. B 72, 214512 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.214512
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/101675
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleNodal Quasiparticle Lifetimes in Cuprate Superconductors
dc.typetext

Files

Collections

arXiv