Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Comparative soft-x-ray resonant-photoemission study on Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 , CuO, and Cu sub 2 O

Journal Article · · Physical Review, B: Condensed Matter; (United States)
; ;  [1]
  1. AT T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974 (United States)
Strong O 1{ital s} and Cu 2{ital p} resonant enhancements are observed in the valence-band photoemission spectra of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}, CuO, and Cu{sub 2}O. The results can be accounted for by a model Hamiltonian with similar parameters but different band filling. The O 1{ital s} (Cu 2{ital p}) resonant enhancements are found to be dominated by local O 2{ital p}{sup 4} (Cu 3{ital d}{sup 8}) final states reached via local intra-atomic processes; interatomic O-to-Cu resonance processes are found to play only a minor role. It is demonstrated that enhancements observed at 0--1.5 eV binding energies in angle-resolved photoemission of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} with the photon energy tuned at 18 eV cannot be attributed to an O 2{ital s} resonance effect.
DOE Contract Number:
AC02-76CH00016
OSTI ID:
7048107
Journal Information:
Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:14; ISSN PRBMD; ISSN 0163-1829
Country of Publication:
United States
Language:
English

Similar Records

Anomalous enhancement of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 Fermi-level states near the O 2 s threshold
Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA) · OSTI ID:5622462

Electronic structure of Bi-based copper oxide superconductors: A comparative photoemission study of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 , Bi sub 2 Sr sub 2 CuO sub 6 , and Bi sub 2 Sr sub 2 CoO sub 6+. delta
Journal Article · Sat Mar 31 23:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA) · OSTI ID:6905276

Comparison of the empty electronic states of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 (001) and Bi sub 2 Sr sub 2 CuO sub 6 (001) at 60 and 300 K
Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA) · OSTI ID:6014475