Interfacial defects in YBa2Cu3O7{plus 45 degree rule}PrBa2Cu3O7-heterostructures on SrTiO3 substrates

C. L. Jia, B. Kabius, H. Soltner, U. Poppe, K. Urban

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The interfaces of YBa2Cu3O7{plus 45 degree rule}PrBa2Cu3O7-heterostructures grown epitaxially on [001]-SrTiO3 substrates were investigated by means of high-resolution electron microscopy and electron diffraction. Misfit dislocation arrays could be observed in the YBa2Cu3O7{plus 45 degree rule}PrBa2Cu3O7 interfaces and inside the first YBa2Cu3O7 layer close to the YBa2Cu3O7/SrTiO73 interface. In the PrBa2Cu3O7 layers a structural modulation was found near the interface. This is explained by the ordering of oxygen vacancies due to compressive strain induced by the adjoining YBa2Cu3O7 layers.

Original languageEnglish (US)
Pages (from-to)81-89
Number of pages9
JournalPhysica C: Superconductivity and its applications
Issue number1-2
StatePublished - Dec 1 1990

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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