High-resolution angle-resolved photoemission study of the Fermi surface and the normal-state electronic structure of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8

Journal Article · Sun Jul 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.381· OSTI ID:6534479

Olson, C G; Liu, R; Lynch, D W ^[1]; List, R S; Arko, A J ^[2]; Veal, B W; Chang, Y C; Jiang, P Z; Paulikas, A P ^[3]

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1. Ames Laboratory, Ames, IA (USA) Physics Department, Iowa State University, Ames, IA (USA)
2. Los Alamos National Laboratory, Los Alamos, NM (USA)
3. Argonne National Laboratory, Argonne, IL (USA)

High-resolution angle-resolved photoelectron spectroscopic measurements were made of the Fermi edge of a single crystal of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} 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.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6534479
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 42:1; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
FERMI LEVEL
CALCIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
LOW TEMPERATURE
MONOCRYSTALS
PHOTOEMISSION
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
EMISSION
ENERGY LEVELS
OXIDES
OXYGEN COMPOUNDS
SECONDARY EMISSION
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties