Oxygen ordering in the basal plane of YBa2Cu3Oz
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Date
1990
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The American Physical Society
Abstract
The ground-state configurations of a lattice-gas model introduced by de Fontaine, Wille, and Moss for the distribution of empty and occupied oxygen sites in the Cu-O basal plane of the high-temperature superconductor YBa2Cu3Oz are determined. It is shown rigorously that the configurations proposed earlier by Wille and de Fontaine basically exhaust the set of possible stable ground-state structures. States of partial order are excluded, except for special values of the interaction constants.
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Stolze, Joachim: Oxygen ordering in the basal plane of YBa2Cu3Oz : Ground states. In: Physical Review Letters Nr. 8, Jg. 64(1990), S. 970-973, doi: 10.1103/PhysRevLett.64.970.