Suppression of superconductivity by crystallographic defects in epitaxial Sr2RuO4 films

Mark A. Zurbuchen, Yunfa Jia, Stacy Knapp, Altaf H. Carim, Darrell G. Schlom, Zou Ling-Nian, Liu Ying

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Epitaxial Sr2RuO4 thin films grown by pulsed-laser deposition from high-purity (99.98%) Sr2RuO4 targets on (001) LaAlO3 were found to be not superconducting down to 0.4 K. Structural disorder is believed to be responsible. A correlation was observed between higher resistivity ratios in electrical transport measurements and narrower x-ray diffraction rocking curve widths of the Sr2RuO4 films. High-resolution transmission electron microscopy revealed that the dominant structural defects, i.e., the defects leading to the observed variation in rocking curve widths in the films, are {011} planar defects, with a spacing comparable to the in-plane superconducting coherence length of Sr2RuO4. These results imply that minimizing structural disorder is the key remaining challenge to achieving superconducting Sr2RuO4 films.

Original languageEnglish (US)
Pages (from-to)2351-2353
Number of pages3
JournalApplied Physics Letters
Volume78
Issue number16
DOIs
StatePublished - Apr 16 2001

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superconductivity
retarding
defects
disorders
superconducting films
curves
pulsed laser deposition
purity
x ray diffraction
spacing
transmission electron microscopy
electrical resistivity
high resolution
thin films

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Zurbuchen, Mark A. ; Jia, Yunfa ; Knapp, Stacy ; Carim, Altaf H. ; Schlom, Darrell G. ; Ling-Nian, Zou ; Ying, Liu. / Suppression of superconductivity by crystallographic defects in epitaxial Sr2RuO4 films. In: Applied Physics Letters. 2001 ; Vol. 78, No. 16. pp. 2351-2353.
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Suppression of superconductivity by crystallographic defects in epitaxial Sr2RuO4 films. / Zurbuchen, Mark A.; Jia, Yunfa; Knapp, Stacy; Carim, Altaf H.; Schlom, Darrell G.; Ling-Nian, Zou; Ying, Liu.

In: Applied Physics Letters, Vol. 78, No. 16, 16.04.2001, p. 2351-2353.

Research output: Contribution to journalArticle

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T1 - Suppression of superconductivity by crystallographic defects in epitaxial Sr2RuO4 films

AU - Zurbuchen, Mark A.

AU - Jia, Yunfa

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AB - Epitaxial Sr2RuO4 thin films grown by pulsed-laser deposition from high-purity (99.98%) Sr2RuO4 targets on (001) LaAlO3 were found to be not superconducting down to 0.4 K. Structural disorder is believed to be responsible. A correlation was observed between higher resistivity ratios in electrical transport measurements and narrower x-ray diffraction rocking curve widths of the Sr2RuO4 films. High-resolution transmission electron microscopy revealed that the dominant structural defects, i.e., the defects leading to the observed variation in rocking curve widths in the films, are {011} planar defects, with a spacing comparable to the in-plane superconducting coherence length of Sr2RuO4. These results imply that minimizing structural disorder is the key remaining challenge to achieving superconducting Sr2RuO4 films.

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