Published December 1, 1990
| Version v1
Journal article
Relation between electronic and atomic structure of YBa2Cu3O6+x
Creators
- 1. Centro Atomico Bariloche, 8400 Bariloche (Argentina)
- 2. Division Fisica del Solido, Comision Nacional de Energia Atomica, Avenida del Libertador 8250, 1429 Buenos Aires (Argentina)
Description
Using a model with strong interatomic correlations previously proposed to explain the electronic structure and pairing in CuO2 superconductors, we obtain a staircase behavior of the Fermi level, and a tendency of O(1) ions to order in Cu-O chains. We study the competition between this tendency and long-range Coulomb repulsion, using an Ising model and group-theoretical techniques. Using the cluster variation method, we also study the orthorhombic-tetragonal transition and correlations of the tetragonal phase. All results agree qualitatively with experiments
Additional details
Publishing Information
- Journal Title
- Physical Review, B: Condensed Matter
- Journal Volume
- 42
- Journal Issue
- 16
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 10226-10229
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22050264
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CORRELATIONS; COULOMB FIELD; CRYSTAL-PHASE TRANSFORMATIONS; ELECTRONIC STRUCTURE; FERMI LEVEL; GROUP THEORY; HIGH-TC SUPERCONDUCTORS; INTERATOMIC FORCES; ISING MODEL; ORTHORHOMBIC LATTICES; PAIRING INTERACTIONS; TETRAGONAL LATTICES; VARIATIONAL METHODS; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL MODELS; CRYSTAL STRUCTURE; ELECTRIC FIELDS; ENERGY LEVELS; INTERACTIONS; MATHEMATICAL MODELS; MATHEMATICS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS