Phys. Rev. Lett. 68, 1069–1072 (1992)Investigation of the superconducting order parameter in Bi2Sr2CaCu2O8 single crystalsReceived 28 August 1991; published in the issue dated 17 February 1992 Single crystals of Bi2Sr2CaCu2O8+δ with different oxygen concentrations were investigated by Raman scattering. Dependent on the polarizations of the incident and the scattered light, the electronic spectra measured well below Tc show either zero or finite intensity at small energy transfers. In oxygen-annealed crystals, the superconducting order parameter Δ is temperature dependent. In contrast, Δ is almost constant in the essentially two-dimensional argon-annealed samples. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.68.1069
DOI:
10.1103/PhysRevLett.68.1069
PACS:
74.70.Vy, 74.30.Gn, 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.