Influence of micro-structure in the low temperature critical currents of YBa2Cu3O7-δ thin films

J. C. Martínez*, B. Dam, B. Stäuble-Pümpin, G. Doornbos, R. Surdeanu, U. Poppe, R. Griessen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Epitaxial YBa2Cu3O7-δ films nucleate in c-axis oriented single-crystalline islands. The surface of the single-crystalline SrTiO3 substrates exhibit steps of one third of the YBa2Cu3O7-δ c-axis. These steps generate a mismatch in the island boundaries between the CuO2 superconducting blocks. We show that these defect regions are strong candidates for being the pinning centers responsible for the large critical currents observed in Laser Ablated and Sputtered thin films.

Original languageEnglish
Pages (from-to)1017-1022
Number of pages6
JournalJournal of Low Temperature Physics
Volume105
Issue number3-4
DOIs
Publication statusPublished - 1996
Externally publishedYes

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