Document Type

Article

Publication Date

7-1990

Journal or Book Title

Physical Review B

Volume

42

Issue

1

First Page

381

Last Page

386

DOI

10.1103/PhysRevB.42.381

Abstract

High-resolution angle-resolved photoelectron spectroscopic measurements were made of the Fermi edge of a single crystal of Bi2Sr2CaCu2O8 at 90 K along several directions in the Brillouin zone. The resultant Fermi-level crossings are consistent with local-density band calculations, including a point calculated to be of Bi-O character. Additional measurements were made where bands crossed the Fermi level between 100 and 250 K, along with measurements on an adjacent Pt foil. The Fermi edges of both materials agree to within the noise. Below the Fermi level the spectra show correlation effects in the form of an increased effective mass, but the essence of the single-particle band structure is retained. The shape of the spectra can be explained by a lifetime-broadened photohole and secondary electrons. The effective inverse photohole lifetime is linear in energy.

Comments

This article is from Physical Review B 42 (1990): 381, doi:10.1103/PhysRevB.42.381. Posted with permission.

Copyright Owner

The American Physical Society

Language

en

File Format

application/pdf

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