Epitaxial Sr2RuO4 heterostructures

Sriram Madhavan, Ying Liu, Darrell G. Schlom, Antoni Dabkowski, Hania A. Dabkowska, Yuri Suzuki, Ichiro Takeuchi, Zoran Trajanovic, R. P. Sharma

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Sr2RuO4 is the only known layered perovskite that is free of copper, yet superconducting. Its low metallic resistivity and excellent lattice match with YBa2Cu3O7-δ make it an attractive candidate for use as conductive electrodes to YBa2Cu3O7-δ-based superconducting devices or as a normal metal in YBa2Cu3O7-δ-based SNS junctions. We have determined optimal deposition conditions for growth of single-domain epitaxial films of Sr2RuO4. Films with excellent crystallinity are readily grown at substrate temperatures exceeding 1000 °C at low pressures. At lower temperatures and higher pressures, films predominantly consist of the SrRuO3 phase. Resistivity versus temperature measurements reveal that the as-grown Sr2RuO4 films are metallic, but not superconducting. Epitaxial YBa2Cu3O7-δ/Sr2RuO4 heterostructures have also been grown. X-ray and resistivity measurements show that the YBa2Cu3O7-δ films are of high quality.

Original languageEnglish (US)
Pages (from-to)2063-2066
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume7
Issue number2 PART 2
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

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

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