Effects of epitaxial strain on the growth mechanism in YBa2Cu3O7-x thin films in YBa2Cu3O7-x/PrBa2 Cu3O7 superlattices

M. Varela, W. Grogger, D. Arias, Z. Sefrioui, C. León, L. Vazquez, C. Ballesteros, K. M. Krishnan, J. Santamaría

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We report on the growth mechanism of YBa2Cu3O7-x. Our study is based on an analysis of ultrathin YBa2Cu3O7-x (YBCO) layers in c-axis-oriented YBa2Cu3O7-x/PrBa 2Cu3O7 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 block-by-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.

Original languageEnglish
Article number174514
Pages (from-to)1745141-1745146
Number of pages6
JournalPhysical Review / B
Volume66
Issue number17
Publication statusPublished - 1 Nov 2002

    Fingerprint

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Varela, M., Grogger, W., Arias, D., Sefrioui, Z., León, C., Vazquez, L., ... Santamaría, J. (2002). Effects of epitaxial strain on the growth mechanism in YBa2Cu3O7-x thin films in YBa2Cu3O7-x/PrBa2 Cu3O7 superlattices. Physical Review / B, 66(17), 1745141-1745146. [174514].