Pair momentum distribution in Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8+. delta. measured by positron annihilation: Existence and nature of the Fermi surface
Journal Article
·
· Physical Review Letters; (United States)
- Brookhaven National Laboratory, Upton, New York (USA)
- AT T Bell Laboratories, Murray Hill, New Jersey (USA)
- Brookhaven National Laboratory, Upton, New York, (USA)
- Institut Romand de Recherche Numerique en Physique des Materiaux (IRRMA), PHB Ecublens, CH-105 Lausanne (Switzerland)
- Department of Physics, Stanford University, Stanford, California (USA)
We report the first measurement of the positron-electron momentum density in superconducting single-crystal Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} ({ital T}{sub {ital c}}{approx}90 K). The observed anisotropy exhibits a twofold (rather than fourfold) symmetry, which is attributed to the superlattice modulation along the {ital b} axis of the BiO{sub 2} layers. Subtraction of the superlattice contribution also reveals a pair momentum distribution consistent with the CuO{sub 2} and BiO{sub 2} Fermi surfaces, and in reasonable agreement with the theoretical pair momentum density derived from band theory.
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5172193
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:10; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kosterlitz-Thouless transitions in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8+[delta]] thin films associated with vortex-string pairing
Evolution of the Fermi Surface with Carrier Concentration in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}
Electronic-structure calculation of the hole-carrier-density distribution in Bi[sub 2]Sr[sub 2]CuO[sub 6], Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8], and Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10] superconductors
Journal Article
·
Mon Aug 01 00:00:00 EDT 1994
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:7171384
Evolution of the Fermi Surface with Carrier Concentration in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}
Journal Article
·
Fri Feb 28 23:00:00 EST 1997
· Physical Review Letters
·
OSTI ID:532629
Electronic-structure calculation of the hole-carrier-density distribution in Bi[sub 2]Sr[sub 2]CuO[sub 6], Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8], and Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10] superconductors
Journal Article
·
Sun May 01 00:00:00 EDT 1994
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6716052
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNIHILATION
BAND THEORY
BASIC INTERACTIONS
BEAMS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
CUPRATES
ELECTROMAGNETIC INTERACTIONS
ENERGY LEVELS
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
INTERACTIONS
LEPTON BEAMS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PARTICLE INTERACTIONS
POSITRON BEAMS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNIHILATION
BAND THEORY
BASIC INTERACTIONS
BEAMS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
CUPRATES
ELECTROMAGNETIC INTERACTIONS
ENERGY LEVELS
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
INTERACTIONS
LEPTON BEAMS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PARTICLE INTERACTIONS
POSITRON BEAMS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS