Phys. Rev. B 52, R9867–R9870 (1995)a-b plane anisotropy of the superconducting gap in Bi2Sr2CaCu2O8+δ
We report a-b plane electronic Raman scattering (ERS) measurements of superconducting Bi2Sr2CaCu2O8+δ single crystals with Tc’s ranging from 90 K down to 65 K on both sides of the doping curve. At low temperatures, a peak associated with the opening of a superconducting energy gap Δ(k) forms in the electronic Raman continuum. Polarization selection rules yield ERS sensitivity to k dependence and a clear anisotropy is observed. As the doping level is varied, anomalies in the observed continuum peak positions indicate that scattering in the B1g symmetry is not a direct probe of Δ(k). © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.52.R9867
DOI:
10.1103/PhysRevB.52.R9867
PACS:
74.25.Gz, 74.62.Dh, 74.72.Hs, 78.30.Er
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.