Epitaxial Sr2RuO4 heterostructures
Madhavan, S.
Ying Liu
Schlom, D.G.
Dabkowski, A.
Dabkowska, H.A.
Suzuki, Y.
Takeuchi, I.
Trajanovic, Z.
Sharma, R.P.
Pennsylvania State Univ., University Park, PA;
This paper appears in: Applied Superconductivity, IEEE Transactions on
Publication Date: Jun 1997
Volume: 7,
Issue: 2, Part 2
On page(s): 2063-2066
Meeting Date: 08/25/1996 - 08/30/1996
Location: Pittsburgh, PA, USA
ISSN: 1051-8223
References Cited: 13
CODEN: ITASE9
INSPEC Accession Number: 5669797
Digital Object Identifier: 10.1109/77.620996
Current Version Published: 2002-08-06
Abstract
Sr2RuO4 is the only known layered perovskite
that is free of copper, yet superconducting. Its low metallic
resistivity and excellent lattice match with YBa2Cu3
O7-δ make it an attractive candidate for use as
conductive electrodes to YBa2Cu3O7-δ
-based superconducting devices or as a normal metal in YBa2
Cu3O7-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
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