Fermi surface in YBa sub 2 Cu sub 3 O sub 6. 9 : Evidence from angle-resolved photoemission spectroscopy and positron two-dimensional angular correlation of annihilation radiation

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.2788· OSTI ID:5885842

Campuzano, J C ^[1]; Smedskjaer, L C; Benedek, R; Jennings, G ^[2]; Bansil, A ^[3]

---

1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 an (USA) Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60680 (USA)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
3. Department of Physics, Northeastern University, Boston, Massachusetts 02115 (USA)

We assess the evidence regarding the geometry of the Fermi surface in YBa{sub 2}Cu{sub 3}O{sub 6.9} obtained from angle-resolved photoemission and positron two-dimensional angular correlation of annihilation radiation experiments. A detailed picture of the Fermi-surface topology of this system appears to be emerging, based on a comparison of the above-mentioned experiments with each other and with local-density-approximation calculations, although whether the Fermi surface is a manifestation of true Fermi-liquid behavior is in dispute. Some implications of these results are discussed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5885842
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 43:4; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
FERMI LEVEL
COPPER OXIDES
YTTRIUM OXIDES
HIGH-TC SUPERCONDUCTORS
PHOTOEMISSION
POSITRON BEAMS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BEAMS
CHALCOGENIDES
COPPER COMPOUNDS
EMISSION
ENERGY LEVELS
LEPTON BEAMS
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
SECONDARY EMISSION
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties