Abstract
We report on the electronic Raman spectra excited and detected with photon polarization directions along the c-axis in Bi 2Sr 2CaCu 2O 8+ δ single crystals. In the normal state, a resonant electronic continuum extends to 1.5 eV and gains significant intensity as the incoming photon energy increases. Below T c , there is a low-frequency redistribution of the electronic continuum and the formation of a 2Δ peak in the superconducting state. The monotonic increase of 2Δ and 2 Δ/ k B T c with decreasing doping is unusual. In particular, this 2Δ feature, which has A 1 g symmetry, is found at higher frequencies than those seen in the planar symmetries for all doping levels studied.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
