Electronic excitations in {ital B}{ital i}{sub {bold 2}}{ital S}{ital r}{sub {bold 2}}{ital C}{ital a}{ital C}{ital u}{sub {bold 2}}{ital O}{sub {bold 8}}: Fermi surface, dispersion, and absence of bilayer splitting

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.1533· OSTI ID:284552

Ding, H; Bellman, A F; Campuzano, J C; Randeria, M; Norman, M R; Yokoya, T; Takahashi, T; Katayama-Yoshida, H; Mochiku, T; Kadowaki, K; Jennings, G; Brivio, G P ^[1]

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1. Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

From a detailed study, including polarization dependence, of the normal state angle-resolved photoemission spectra for Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}, we find only one CuO{sub 2} band related feature. All other spectral features can be ascribed either to umklapps from the superlattice or to {open_quote}{open_quote}shadow bands.{close_quote}{close_quote} Even though the dispersion of the peaks looks like band theory, the line shape is anomalously broad and no evidence is found for bilayer splitting. We argue that the {open_quote}{open_quote}dip feature{close_quote}{close_quote} in the spectrum below {ital T}{sub {ital c}} arises not from bilayer splitting, but rather from many-body effects. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 284552
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANGULAR DISTRIBUTION
BAND STRUCTURE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
DISPERSION RELATIONS
ELECTRONIC STRUCTURE
EMISSION SPECTRA
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
MANY-BODY PROBLEM
PHOTOEMISSION
STRONTIUM OXIDES