Evidence for CuO conducting band splitting in the nodal direction of Bi-2212

Details Evidence for CuO conducting band splitting in the nodal direction of Bi-2212 Evidence for CuO conducting band splitting in the nodal direction of Bi-2212

2003-11-06

arxiv.org/abs/cond-mat/0311137v2

Phys. Rev. B 70, 214525 (2004)

Physics

Condensed Matter

Superconductivity

Fermi surface map with well resolved nodal splitting is added

Scientific paper

10.1103/PhysRevB.70.214525

Using angle-resolved photoemission spectroscopy with ultimate momentum resolution we have explicitly resolved the bilayer splitting in the nodal direction of Bi-2212. The splitting is observed in a wide doping range and, within the experimental uncertainty, its size does not depend on doping. The value of splitting derived from the experiment is in good agreement with that from band structure calculations which implies the absence of any electronic confinement to single planes within bilayers of Bi-2212. Other consequences of this finding are also discussed.

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