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DEFECTS, DEFECT ORDERING, STRUCTURAL COHERENCE AND SUPERCONDUCTIVITY IN THE 123-COPPER OXIDES

Abstract:
We discuss the influence of oxygen defects and defect ordering on superconductivity in 123 compounds. Because of the complexity of the high-temperature phase diagram, the synthesis history can significantly influence the properties. Room-temperature annealing experiments show that defect ordering on a short length scale can have a remarkable affect on superconductivity. We propose that structural coherence in the CuO2 planes, which is present only if there is orthorhombic symmetry on at least a short length scale, is a requirement for superconductivity in these compounds. © 1991.
Publication status:
Published

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Publisher copy:
10.1016/0921-4534(91)91970-F

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author


Host title:
PHYSICA C
Volume:
185
Issue:
PART 1
Pages:
184-189
Publication date:
1991-12-01
DOI:
ISSN:
0921-4534


Pubs id:
pubs:66382
UUID:
uuid:90486f2c-7f43-474a-872e-61a9f463f4d9
Local pid:
pubs:66382
Source identifiers:
66382
Deposit date:
2012-12-19

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