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Interplay between the vortex phase coherence and extended disorder defects in the vortex-liquid regime of thin films and superlattices of 123 superconductors

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González Herrera, Elvira María and González Casado, J.M. and Vicent López, José Luis (2000) Interplay between the vortex phase coherence and extended disorder defects in the vortex-liquid regime of thin films and superlattices of 123 superconductors. Physical review B, 62 (13). pp. 8707-8710. ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.62.8707


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Abstract

a-axis oriented (CuO_2 planes perpendicular to the substrate) films and superlattices grown on cubic substrates show a structure with 90° microdomains. The microdomains are grains with a 90° rotation of the c axis. In the vortex liquid region, this microstructure induces a change from the usual three-dimensional (3D) behavior of the anisotropy toward a 2D behavior, in a temperature range above the usual crossover from 2D to 3D. Moreover, when the thickness of the superconducting part of the multilayers becomes smaller (or of the same order as) than the microdomain size the 3D dimensional anisotropy behavior is recovered.


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©2000 The American Physical Society.
The authors want to thank I. K. Schuller, F. de la Cruz and G. Crabtree for useful conversations. This work has been supported by Spanish CICYT (MAT99-724).

Uncontrolled Keywords:Oriented YBa_2Cu_3O_7/PrBa_2Cu_3O_7 superlattices; High-temperature superconductors; A-Axis YBa_2Cu_3O_7; Transport-properties; Anisotropy
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:43901
Deposited On:20 Jul 2017 17:12
Last Modified:20 Jul 2017 17:12

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