Polarization selection rules and superconducting gap anisotropy in Bi2Sr2CaCu2O8
M. R. Norman, M. Randeria, H. Ding, J. C. Campuzano, A. F. Bellman
DOI 10.1103/PhysRevB.52.15107 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We discuss polarization selection rules for angle-resolved photoemission spectroscopy in Bi2212. Using these we show that the hump in the superconducting gap observed in the X quadrant in our earlier work is not on the main CuO2 band, but rather on an umklapp band arising from the structural superlattice. The intrinsic gap is most likely quite small over a range of ±10° about the diagonal directions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Influence of gap extrema on the tunneling conductance near an impurity in an anisotropic superconductor
similarity 0.96J. M. Byers et al.
Source status unknown — claims are unverified
Symmetry of the superconducting order parameter in Bi2Sr2CaCu2Ox
similarity 0.96R. J. Kelley et al.
Source status unknown — claims are unverified
Gap Anisotropy in the Layered High Temperature Superconductors
similarity 0.96W. M. Temmerman et al.
Source status unknown — claims are unverified
Raising Bi-O Bands above the Fermi Energy Level of Hole-Doped Bi2Sr2CaCu2O8+δ and Other Cuprate Superconductors
similarity 0.96Hsin Lin et al.
Source status unknown — claims are unverified
Effects of gap and band anisotropy on spin susceptibility in the oxide superconductors
similarity 0.95J. M. Rendell & J. P. Carbotte
Source status unknown — claims are unverified
Mixed Lattice and Electronic States in High-Temperature Superconductors
similarity 0.95R. J. McQueeney et al.
Source status unknown — claims are unverified