The joys and pitfalls of Fermi surface mapping in Bi2212 using angle resolved photoemission

Details The joys and pitfalls of Fermi surface mapping in Bi2212 using angle resolved photoemission The joys and pitfalls of Fermi surface mapping in Bi2212 using angle resolved photoemission

1999-12-15

arxiv.org/abs/cond-mat/9912289v1

Phys. Rev. Lett. 84, 4453 (2000)

Physics

Condensed Matter

Superconductivity

4 pages (revtex), 3 figures (eps)

Scientific paper

10.1103/PhysRevLett.84.4453

On the basis of angle-scanned photoemission data recorded using unpolarised 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 Bi_2Sr_2CaCu_2O_8 (Bi2212). The true picture is simple, self-consistent and robust: the FS is hole-like, with the form of rounded tubes centred 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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