Theoretical study of Cu-O chain fragments in the oxygen-deficient planes of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}. II. Intrachain interactions and the chain fragment{close_quote}s length distribution
Journal Article
·
· Physical Review, B: Condensed Matter
- Commissariat a lEnergie Atomique, Departement de Recherche Fondamentale sur la Matiere Condensee SPSMS/MDN, Centre dEtudes Nucleaires de Grenoble, 17, rue des Martyrs, 38054 Grenoble Cedex 9 (France)
- Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Federal Republic of Germany)
We study some models of the strongly correlated {center_dot}{center_dot}{center_dot}Cu-O{center_dot}{center_dot}{center_dot} chain fragments that form on the oxygen-deficient planes of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}. We use analytical and numerical methods to investigate the stability of the chain fragments as a function of their size. We discuss also the size and {ital x} dependence of the O-O intrachain interactions that enter in the phenomenological descriptions of the CuO{sub {ital x}} planes. Only the fermionic degrees of freedom of the chain fragments are considered. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279107
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 9 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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