Can positron 2D-ACAR resolve the electronic structure of high-T sub c superconductors

Journal Article · Sun May 10 04:00:00 EDT 1992 · International Journal of Modern Physics B; (United States)

OSTI ID:7110623

Chan, L P; Lynn, K G ^[1]; Harshman, D R ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. AT and T Bell Labs., Murray Hill, NJ (United States)

In this paper, the authors examine the ability of the positron Two-Dimensional Angular Correlation Annihilation Radiation (2D-ACAR) technique to resolve the electronic structures of high-T{sub c} cuprate superconductors. Following a short description of the technique, discussions of the theoretical assumptions, data analysis and experimental considerations, in relation to the high-T{sub c} superconductors, are given. The authors briefly review recent 2D-ACAR experiments on YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}, Bi{sub 2}Sr{sub 2}CaCuO{sub 8+{delta}} and La{sub 2{minus}x}Sr{sub x}CuO{sub 4}. The 2D-ACAR technique is useful in resolving the band crossings associated with the layers of the superconductors that are preferentially sampled by the positrons. Together with other Fermi surface measurements (namely angle-resolved photoemission), 2D-ACAR can resolve some of the electronic structures of high-T{sub c} cuprate superconductors.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7110623
• Journal Information: International Journal of Modern Physics B; (United States), Journal Name: International Journal of Modern Physics B; (United States) Vol. 6:11; ISSN 0217-9792; ISSN IJPBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ANGULAR CORRELATION
ANNIHILATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BARIUM COMPOUNDS
BASIC INTERACTIONS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
COPPER COMPOUNDS
CORRELATIONS
CUPRATES
DATA
DOCUMENT TYPES
ELECTROMAGNETIC INTERACTIONS
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HIGH-TC SUPERCONDUCTORS
INFORMATION
INTERACTIONS
LANTHANUM COMPOUNDS
LEPTONS
LIFETIME
MATTER
NUMERICAL DATA
OXYGEN COMPOUNDS
PARTICLE INTERACTIONS
POSITRONS
RARE EARTH COMPOUNDS
RESOLUTION
REVIEWS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TWO-DIMENSIONAL CALCULATIONS
YTTRIUM COMPOUNDS