Growth of untwinned Bi2Sr2Ca2Cu 3Ox thin films by atomically layered epitaxy

J. N. Eckstein, I. Bozovic, D. G. Schlom, J. S. Harris

Research output: Contribution to journalArticle

Abstract

We report the growth of untwinned epitaxial thin films of Bi-Sr-Ca-Cu-O by atomically layered heteroepitaxy on SrTiO3 substrates. These films are c-axis oriented as-layered and do not exhibit 90°in-plane defects, i.e., a-b "twinning". By misorienting the surface normal from {100} by approximately 4°towards 〈111〉, the cubic symmetry of the {100} surface is adequately broken to completely align the b axis of the superconducting film with respect to the substrate. Reflection high-energy electron diffraction patterns observed during growth and post-growth x-ray diffraction analysis indicate that the incommensurate structural modulation occurs along the same direction as the step edges.

Original languageEnglish (US)
Pages (from-to)1049-1051
Number of pages3
JournalApplied Physics Letters
Volume57
Issue number10
DOIs
StatePublished - Dec 1 1990
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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