Lattice gas simulation of oxygen ordering in YBa sub 2 Cu sub 3 O sub 6+x showing dynamical scaling

Journal Article · Mon May 20 04:00:00 EDT 1991 · Modern Physics Letters B; (United States)

DOI:https://doi.org/10.1142/S0217984991001015· OSTI ID:5545474

Poulsen, H F; Andersen, J V; Mouritsen, O G ^[1]; Andersen, N H ^[2]; Bohr, H ^[3]

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1. Dept. of Structural Properties of Materials, Technical Univ. of Denmark, B. 307, DK-2600 Lyngby (DK)
2. Physics Dept., Riso National Lab., DK-4000 Roskilde (DK)
3. Noyes Lab., Univ. of Illinois at Urbana-Champaign, Urbana, IL (US)

This paper reports on a 2-dimensional anisotropic lattice model for the oxygen ordering in the high T{sub c} superconductor of the YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} type shown to exhibit and ordering dynamics that obey algebraic growth laws which depend on whether it is an Ortho-I or Ortho-II phase. It is possible to relate this dynamical scaling behavior to a similar scaling in the experimentally observed temporal variation of the superconductivity transition temperature and hence suggesting a specific coupling between the coherence of oxygen order in the basal Cu-O planes and the superconducting state. Furthermore it is possible to explain the variation in the transition temperature with the oxygen density x by a phase mixing model of Ortho-II/Ortho-I domains and an assumption about the charge transfer between the basal and superconducting plane.

• OSTI ID: 5545474
• Journal Information: Modern Physics Letters B; (United States), Journal Name: Modern Physics Letters B; (United States) Vol. 5:12; ISSN 0217-9849; ISSN MPLBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALGEBRAIC FIELD THEORY
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
AXIOMATIC FIELD THEORY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODYNAMICS
ELEMENTS
FIELD THEORIES
HIGH-TC SUPERCONDUCTORS
INVARIANCE PRINCIPLES
LATTICE FIELD THEORY
NONMETALS
ORDER-DISORDER TRANSFORMATIONS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
SCALE INVARIANCE
SIMULATION
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TWO-DIMENSIONAL CALCULATIONS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES