Physics – Condensed Matter – Superconductivity
Scientific paper
1999-08-19
J. Low Temp. Phys. 117, p. 425 (1999)
Physics
Condensed Matter
Superconductivity
5 pages, 3 figures, conference MOS 1999, Stockholm will be published in Jour. Low Temp. Physics
Scientific paper
We investigate the electronic background as well as the O2-O3 mode at 330 cm^-1 of highly doped YbBa2Cu3O7-delta in B1g symmetry. Above the critical temperature Tc the spectra consist of an almost constant electronic background and superimposed phononic excitations. Below Tc the superconducting gap opens and the electronic background redistributes exhibiting a 2Delta peak at 320 cm^-1. We use a model that allows us to separate the background from the phonon. In this model the phonon intensity is assigned to the coupling of the phonon to inter- and intraband electronic excitations. For excitation energies between 1.96 eV and 2.71 eV the electronic background exhibits hardly any resonance. Accordingly, the intraband contribution to the phonon intensity is not affected. In contrast, the interband contribution vanishes below Tc at 1.96 eV while it remains almost unaffected at 2.71 eV.
Bock A.
Kiltz J.
Ostertun S.
Wolf Thomas
No associations
LandOfFree
Resonant Raman Study of Superconducting Gap and Electron-Phonon Coupling in YbBa2Cu3O7-delta does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Resonant Raman Study of Superconducting Gap and Electron-Phonon Coupling in YbBa2Cu3O7-delta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonant Raman Study of Superconducting Gap and Electron-Phonon Coupling in YbBa2Cu3O7-delta will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-85312