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Oxygen Ordering and Interfacial Superconductivity at Twin Boundaries in a Landau-Ginzburg Superconductor Oxide Model

Varea, C. / Robledo, A.

Abstract We analyse the superconducting critical behavior of a model YBa2Cu3O9-y twinned orthorhombic crystal. For a Landau-Ginzburg free energy with coupled superconducting and oxygen-vacancy order parameters, the symmetry-breaking twin boundaries induce a purely interfacial superconducting transition at T c twin > Tco, within a range of oxygen bulk compositions. Bulk superconductivity occurs at T < Tco below the oxygen-vacancy ordering temperature TO.

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Oxygen Ordering and Interfacial Superconductivity at Twin Boundaries in a Landau-Ginzburg Superconductor Oxide Model

Varea, C. / Robledo, A.

Abstract We analyse the superconducting critical behavior of a model YBa2Cu3O9-y twinned orthorhombic crystal. For a Landau-Ginzburg free energy with coupled superconducting and oxygen-vacancy order parameters, the symmetry-breaking twin boundaries induce a purely interfacial superconducting transition at T c twin > Tco, within a range of oxygen bulk compositions. Bulk superconductivity occurs at T < Tco below the oxygen-vacancy ordering temperature TO.

Oxygen Ordering and Interfacial Superconductivity at Twin Boundaries in a Landau-Ginzburg Superconductor Oxide Model

Varea, C. / Robledo, A.

Abstract We analyse the superconducting critical behavior of a model YBa2Cu3O9-y twinned orthorhombic crystal. For a Landau-Ginzburg free energy with coupled superconducting and oxygen-vacancy order parameters, the symmetry-breaking twin boundaries induce a purely interfacial superconducting transition at T c twin > Tco, within a range of oxygen bulk compositions. Bulk superconductivity occurs at T < Tco below the oxygen-vacancy ordering temperature TO.

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Title:

Oxygen Ordering and Interfacial Superconductivity at Twin Boundaries in a Landau-Ginzburg Superconductor Oxide Model

Contributors:

Varea, C. (author) / Robledo, A. (author)

Published in:

Novel Superconductivity ; 1033-1039

Publication date:

1987-01-01

Size:

7 pages

ISBN:

978-1-4612-9076-6 , 978-1-4613-1937-5

DOI:

https://doi.org/10.1007/978-1-4613-1937-5_131

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Oxygen Vacancy , Twin Boundary , Oxygen Deficiency , Antiphase Boundary , Bulk Superconductivity Physics , Strongly Correlated Systems, Superconductivity , Characterization and Evaluation of Materials

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