Theoretical study of Cu-O chain fragments in the oxygen-deficient planes of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}. I. Microscopic properties
Journal Article
·
· Physical Review, B: Condensed Matter
- Commissariat a lEnergie Atomique, Departement de Recherche Fondamentale sur la Matiere Condensee, SPSMS/MDN, Centre dEstudes Nucleaires de Grenoble, 17, rue des Martyrs, 38054 Grenoble Cedex 9 (France)
- University of Oslo, Department of Physics, P.O. Box 1048, Blindern 0316 Oslo (Norway)
- Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Federal Republic of Germany)
We examine some models of the strongly correlated {center_dot}{center_dot}{center_dot}Cu-O{center_dot}{center_dot}{center_dot} chain fragments that are the main components of the oxygen-deficient planes of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}. We use quantum Monte Carlo methods, exact numerical diagonalization as well as an analytical approach in order to study the thermodynamic properties of the chain fragments and the charge and magnetic correlations within them as functions of the concentration of carriers and of the temperature. Only the fermionic degrees of freedom of the chain fragments are considered. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279106
- 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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