Title
On the asymmetric next-nearest-neighbor ising model of oxygen ordering in <tex>$YBa_{2}Cu_{3}O_{z}$</tex>On the asymmetric next-nearest-neighbor ising model of oxygen ordering in <tex>$YBa_{2}Cu_{3}O_{z}$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Paris,
Subject
Physics
Source (journal)
Europhysics letters. - Paris
Volume/pages
19(1992):3, p. 229-234
ISSN
0295-5075
ISI
A1992HZ34700013
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Basic results concerning oxygen ordering in the superconducting compound YBa2Cu3Oz are briefly summarized. It is shown that, at equilibrium, only infinite-chain structures can be stabilized and those models based on hypothetical (and actually nonphysical) screened Coulomb interactions cannot produce stable ground states. It is suggested that diffraction data (neutrons, X-rays, electrons) from oxygen-lean samples are indicative of metastable displacive transformations, and are not directly related to oxygen ordering.
E-info
https://repository.uantwerpen.be/docman/iruaauth/e41388/fb54910.pdf
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