%0 Journal Article
%T Doubling of the bands in overdoped Bi2Sr2CaCu2O8-probable evidence for c-axis bilayer coupling
%A Y. -D. Chuang
%A A. D. Gromko
%A A. Fedorov
%A D. S. Dessau
%A Y. Aiura
%A K. Oka
%A Yoichi Ando
%A H. Eisaki
%A S. I. Uchida
%J Physics
%D 2001
%I arXiv
%R 10.1103/PhysRevLett.87.117002
%X We present high resolution ARPES data of the bilayer superconductor Bi2Sr2CaCu2O8 (Bi2212) showing a clear doubling of the near EF bands. This splitting approaches zero along the (0,0)-(pi,pi) nodal line and is not observed in single layer Bi2Sr2CuO6 (Bi2201), suggesting that the splitting is due to the long sought after bilayer splitting effect. The splitting has a magnitude of approximately 75 meV near the middle of the zone, extrapolating to about 100 meV near the (pi,0) point
%U http://arxiv.org/abs/cond-mat/0102386v1