A photoemission study to confirm the second order nature of anomalous O 2s resonant enhancement of Bi2Sr2CaCu2O8(001) fermi level states

doi:10.1016/0921-4534(91)91747-R

Physica C: Superconductivity

Volumes 185–189, Part 2, 1 December 1991, Pages 1047-1048

https://doi.org/10.1016/0921-4534(91)91747-R Get rights and content

Abstract

We have performed a synchrotron-excited angle resolved photoemission study of the valence band region of cleaved Bi₂Sr₂CaCu₂O₈(001) samples. By recording spectra between 16 and 30eV on two separate beamlines with differing second order light contributions, we have investigated the origin of previously reported “anomalous” O 2s resonant enhancement of Fermi level states, in which the features showing resonant enhancement apparently disperse with photon energy. Our results indicate that anomalous O 2s resonant enhancement may be explained by second order effects.

References (3)

B.O. Wells et al.
Phys. Rev. B
(1989)

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A photoemission study to confirm the second order nature of anomalous O 2s resonant enhancement of Bi2Sr2CaCu2O8(001) fermi level states

Abstract

Phys. Rev. B

A photoemission study to confirm the second order nature of anomalous O 2s resonant enhancement of Bi₂Sr₂CaCu₂O₈(001) fermi level states