Electrical Transport Dissipation Effects in Epitaxial Y1ba2cu3o7.X Thin Films


The electrical transport properties of a series of Y1Ba2Cu307.x thin films deposited onto single crystal substrates by thermal coevaporation and laser ablation were investigated. For fully epitaxial, c-oriented films on (001) substrate surfaces, the critical current density Jc showed large high-field enhancements for the film aligned with H parallel to the copper-oxygen planes. With H||c, a precipitous decay of Jc with increasing field is described by thermally activated flux motion. Films on (110) SrTiO3 substrates were comprised of finely-divided arrays of grains having [110], and <103>-type orientations, and exhibited granular behavior. For these “triaxial” films, the transport dissipation was also thermally activated but with much smaller energy barriers.

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Correspondence to D. K. Christen.

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Christen, D.K., Klabunde, C.E., Feenstra, R. et al. Electrical Transport Dissipation Effects in Epitaxial Y1ba2cu3o7.X Thin Films. MRS Online Proceedings Library 169, 883–886 (1989). https://doi.org/10.1557/PROC-169-883

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