Ground-state analysis of ordered superstructures in the basal plane of YBa/sub 2/Cu/sub 3/O/sub z/

Journal Article · Sun Jan 31 23:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.2227· OSTI ID:5681027

Wille, L T; de Fontaine, D

Ordered superstructures consisting of occupied and empty oxygen sites in the Cu-O basal plane of YBa/sub 2/Cu/sub 3/O/sub z/ have been determined. Pairwise interactions (V/sub 1/, V/sub 2/, V/sub 3/) between nearest- and next-nearest-neighbor sites are assumed and ordering maps are plotted as a function of V/sub 2//V/sub 1/ and V/sub 3//V/sub 1/ (in the ordering case: V/sub 1/>0). The ground state of this Ising model is determined by a direct enumeration method and the relation with experimentally obtained structures is discussed.

• Research Organization: Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720
• OSTI ID: 5681027
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL MODELS
CRYSTAL STRUCTURE
ENERGY LEVELS
GROUND STATES
HAMILTONIANS
INTERACTIONS
ISING MODEL
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
ORDER-DISORDER TRANSFORMATIONS
OXIDES
OXYGEN COMPOUNDS
PAIRING INTERACTIONS
PHASE TRANSFORMATIONS
QUANTUM OPERATORS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES