d-wave model for microwave response of high-Tcsuperconductors

Quasiparticle Transport and Localization in High-TcSuperconductors

“…This fact is well reproduced by approximate, self-consistent treatments of impurity scattering which show that a constant finite density of states is generated at the Fermi energy for any arbitrarily weak impurity strength [4,5]. Quasiparticle transport properties have also been investigated [6,7] theoretically with such selfconsistent approximations with some phenomenological success. Going further, Lee [4] has suggested, on the basis of calculations of the zero frequency microwave conductivity, that the quasiparticle eigenstates are strongly localized.…”

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

“…Quasiparticle scattering by impurities (elastic scattering) has been studied extensively in d-wave superconductors 21,47,51,52 . In the strong-scattering regime, impurities have a pair-breaking effect, causing a crossover to T 2 behaviour in the low-temperature superfluid density.…”

Grazing Incidence Infrared Reflectivity ofLa1.85Sr0.15CuO4Somal1, Feenstra2, Schützmann3 et al. 1996Phys. Rev. Lett.362160View full textAdd to dashboardCite

“…3 favors d-wave symmetry with s sc 0.4, so that h ഠ 0.2p. The analysis of microwave surface impedance measurements of YBa 2 Cu 3 O y between 4 and 40 GHz indicates that for these materials the elastic scattering is very small and close to the unitarity limit ͑0.98 , h , 1͒ [19,20]. The temperature dependence of the ab-plane penetration depth of La 22x Sr x CuO measured at 10 GHz drops slightly below the BCS prediction for s-wave pairing [13].…”