Fermi surface of Bi2Sr2CaCu2O8
We study the Fermi surface of Bi2Sr2CaCu2O8 using angle resolved photoemission spectroscopy (ARPES) with a momentum resolution of approximately 0.01 of the Brillouin zone. We show that, contrary to recent suggestions, the ARPES derived Fermi surface is a large hole barrel centered at (pi,pi), independent of the incident photon energy. We caution that the photon energy and k dependence of the matrix elements, if not properly accounted for, can lead to misinterpretation of ARPES intensities.
Fretwell
HM
Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
Kaminski
A
Mesot
J
Campuzano
JC
Norman
MR
Randeria
M
Sato
T
Gatt
R
Takahashi
T
Kadowaki
K