Abstract
On the basis of angle-scanned photoemission data recorded using unpolarized
radiation, with high (E,k) resolution, and an extremely dense sampling
of k space, we resolve the current controversy regarding the normal
state Fermi surface (FS) in Bi2Sr2CaCu2O8+δ. The true picture is
simple, self-consistent, and robust: the FS is holelike, with the
form of rounded tubes centered on the corners of the Brillouin zone.
Two further types of features are also clearly observed: shadow FSs,
which are most likely to be due to short range antiferromagnetic
spin correlations, and diffraction replicas of the main FS caused
by passage of the photoelectrons through the modulated Bi-O planes.
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