2003/06/09 by E. J. Nicol, J. P. Carbotte, J. P. Ćarbotte · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.67.214506
published as Phys. Rev. B, vol. 67, 214506 (2003). · 14 pages, 11 figures
openalex publication_date 2003/06/09 · arxiv created 2003/07/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Recent application of ultrafast pump/probe optical techniques to superconductors has renewed interest in nonequilibrium superconductivity and the predictions that would be available for novel superconductors, such as the high-Tc cuprates. We have reexamined two of the classical models which have been used in the past to interpret nonequilibrium experiments with some success: the \mathrm\ensuremathμ* model of Owen and Scalapino and the T* model of Parker. Predictions depend on pairing symmetry. For instance, the gap suppression due to the excess quasiparticle density n in the \mathrm\ensuremathμ* model, varies as n3/2 in d wave as opposed to n for s wave. Finally, we consider these models in the context of S\ensuremath-I\ensuremath-N tunneling and optical excitation experiments. While we confirm that recent pump/probe experiments in YBCO, as presently interpreted, are in conflict with d-wave pairing, we refute the further claim that they agree with s wave.