Epitaxial Sr2RuO4 heterostructures

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

doi:10.1109/77.620996

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 journal › Article › peer-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 YBa₂Cu₃O_7-δ make it an attractive candidate for use as conductive electrodes to YBa₂Cu₃O_7-δ-based superconducting devices or as a normal metal in YBa₂Cu₃O_7-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 YBa₂Cu₃O_7-δ/Sr₂RuO₄ heterostructures have also been grown. X-ray and resistivity measurements show that the YBa₂Cu₃O_7-δ films are of high quality.

Original language	English (US)
Pages (from-to)	2063-2066
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	7
Issue number	2 PART 2
DOIs	https://doi.org/10.1109/77.620996
State	Published - 1997

All Science Journal Classification (ASJC) codes

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

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title = "Epitaxial Sr2RuO4 heterostructures",

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.",

author = "Sriram Madhavan and Ying Liu and Schlom, {Darrell G.} and Antoni Dabkowski and Dabkowska, {Hania A.} and Yuri Suzuki and Ichiro Takeuchi and Zoran Trajanovic and Sharma, {R. P.}",

year = "1997",

doi = "10.1109/77.620996",

language = "English (US)",

volume = "7",

pages = "2063--2066",

journal = "IEEE Transactions on Applied Superconductivity",

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T1 - Epitaxial Sr2RuO4 heterostructures

AU - Madhavan, Sriram

AU - Liu, Ying

AU - Schlom, Darrell G.

AU - Dabkowski, Antoni

AU - Dabkowska, Hania A.

AU - Suzuki, Yuri

AU - Takeuchi, Ichiro

AU - Trajanovic, Zoran

AU - Sharma, R. P.

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

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