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Título:
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Effects of epitaxial strain on the growth mechanism in YBa_(2)Cu_(3)O_(7-x) thin films in YBa_(2)Cu_(3)O_(7-x)/PrBa_(2)Cu_(3)O_(7) superlattices
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Autores:
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Varela del Arco, María ;
Grogger, W. ;
Arias Serna, Diego ;
Sefrioui, Zouhair ;
León Yebra, Carlos ;
Vázquez, L. ;
Ballesteros, C. ;
Krishnan, K.M. ;
Santamaría Sánchez-Barriga, Jacobo
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2002-11-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Electricidad
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Materia = Ciencias: Física: Electrónica
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Tipo = Artículo
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Resumen:
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We report on the growth mechanism of YBa_(2)Cu_(3)O_(7-x). Our study is based on an analysis of ultrathin YBa_(2)Cu_(3)O_(7-x) (YBCO) layers in c-axis-oriented YBa_(2)Cu_(3)O_(7-x)/PrBa_(2)Cu_(3)O_(7)superlattices. We have found that the release of epitaxial strain in very thin YBCO layers triggers a change in the dimensionality of the growth mode. Ultrathin epitaxially strained YBCO layers with thickness below 3 unit cells grow in a blockby-block two -dimensional mode that is coherent over large lateral distances. Meanwhile, when the thickness increases and the strain relaxes, layer growth turns three-dimensional, resulting in rougher layers and interfaces.
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En línea:
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https://eprints.ucm.es/id/eprint/31022/1/LeonC84libre.pdf
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