Spatially resolved measurements of the current transport in Y 1Ba2Cu3O7 films

D. Koelle; F. Kober; R. Gross; R. P. Huebener; A. Gupta; J. Mannhart; B. Roas

doi:10.1088/0953-2048/4/1S/024

Spatially resolved measurements of the current transport in Y ₁Ba₂Cu₃O₇ films

D. Koelle, F. Kober, R. Gross, R. P. Huebener, A. Gupta, J. Mannhart, B. Roas

University of Tübingen

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The spatial variation of the resistive transition and critical current density j_c in Y₁Ba₂Cu₃O₇ films, grown on single crystalline and polycrystalline SrTiO₃, has been imaged by low temperature scanning electron microscopy (LTSEM) with a spatial resolution of about 1 mu m. In polycrystalline samples the limitation of j_c due to the weak link behavior of the grain boundary network has been directly imaged. The studies on epitaxial YBCO films with j_c (77 K) above 10⁶ A/cm² reveal temperature variations in the local resistive transition curves up to 200 mK. Possible mechanisms for the observed spatial variations are discussed.

Original language	English
Article number	024
Pages (from-to)	S115-S117
Journal	Superconductor Science and Technology
Volume	4
Issue number	1 S
DOIs	https://doi.org/10.1088/0953-2048/4/1S/024
State	Published - 1991
Externally published	Yes

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title = "Spatially resolved measurements of the current transport in Y 1Ba2Cu3O7 films",

abstract = "The spatial variation of the resistive transition and critical current density jc in Y1Ba2Cu3O7 films, grown on single crystalline and polycrystalline SrTiO3, has been imaged by low temperature scanning electron microscopy (LTSEM) with a spatial resolution of about 1 mu m. In polycrystalline samples the limitation of jc due to the weak link behavior of the grain boundary network has been directly imaged. The studies on epitaxial YBCO films with jc (77 K) above 106 A/cm2 reveal temperature variations in the local resistive transition curves up to 200 mK. Possible mechanisms for the observed spatial variations are discussed.",

author = "D. Koelle and F. Kober and R. Gross and Huebener, {R. P.} and A. Gupta and J. Mannhart and B. Roas",

year = "1991",

doi = "10.1088/0953-2048/4/1S/024",

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T1 - Spatially resolved measurements of the current transport in Y 1Ba2Cu3O7 films

AU - Koelle, D.

AU - Kober, F.

AU - Gross, R.

AU - Huebener, R. P.

AU - Gupta, A.

AU - Mannhart, J.

AU - Roas, B.

PY - 1991

Y1 - 1991

N2 - The spatial variation of the resistive transition and critical current density jc in Y1Ba2Cu3O7 films, grown on single crystalline and polycrystalline SrTiO3, has been imaged by low temperature scanning electron microscopy (LTSEM) with a spatial resolution of about 1 mu m. In polycrystalline samples the limitation of jc due to the weak link behavior of the grain boundary network has been directly imaged. The studies on epitaxial YBCO films with jc (77 K) above 106 A/cm2 reveal temperature variations in the local resistive transition curves up to 200 mK. Possible mechanisms for the observed spatial variations are discussed.

AB - The spatial variation of the resistive transition and critical current density jc in Y1Ba2Cu3O7 films, grown on single crystalline and polycrystalline SrTiO3, has been imaged by low temperature scanning electron microscopy (LTSEM) with a spatial resolution of about 1 mu m. In polycrystalline samples the limitation of jc due to the weak link behavior of the grain boundary network has been directly imaged. The studies on epitaxial YBCO films with jc (77 K) above 106 A/cm2 reveal temperature variations in the local resistive transition curves up to 200 mK. Possible mechanisms for the observed spatial variations are discussed.

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SN - 0953-2048

VL - 4

SP - S115-S117

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 1 S

M1 - 024

ER -

Spatially resolved measurements of the current transport in Y ₁Ba₂Cu₃O₇ films

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