High-angle grain-boundary junctions in YBa2Cu3O7: Normal-state resistance and 1/f noise

Li Liu; E. R. Nowak; H. M. Jaeger; B. V. Vuchic; K. L. Merkle; D. B. Buchholz; Robert P. H. Chang

doi:10.1103/PhysRevB.51.16164

High-angle grain-boundary junctions in YBa2Cu3O7: Normal-state resistance and 1/f noise

Li Liu, E. R. Nowak, H. M. Jaeger, B. V. Vuchic, K. L. Merkle, D. B. Buchholz, Robert P. H. Chang

Northwestern University

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Abstract

We have investigated the normal-state resistance and the excess low-frequency (1/f) noise in 45°tilt [001] grain-boundary junctions in YBa2Cu3O7 thin films. A characteristic temperature dependence of the resistance fluctuations and a linear temperature dependence of the grain-boundary resistance (with a negative temperature coefficient) emerge as common features. These observations are quantitatively compared with a model of many, parallel conduction paths across the boundary, taking into account both temperature-independent and thermally activated transport processes.

Original language	English
Pages (from-to)	16164-16167
Number of pages	4
Journal	Physical Review B
Volume	51
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.51.16164
Publication status	Published - 1995

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ASJC Scopus subject areas

Condensed Matter Physics

Cite this

Liu, L., Nowak, E. R., Jaeger, H. M., Vuchic, B. V., Merkle, K. L., Buchholz, D. B., & Chang, R. P. H. (1995). High-angle grain-boundary junctions in YBa2Cu3O7: Normal-state resistance and 1/f noise. Physical Review B, 51(22), 16164-16167. https://doi.org/10.1103/PhysRevB.51.16164

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abstract = "We have investigated the normal-state resistance and the excess low-frequency (1/f) noise in 45°tilt [001] grain-boundary junctions in YBa2Cu3O7 thin films. A characteristic temperature dependence of the resistance fluctuations and a linear temperature dependence of the grain-boundary resistance (with a negative temperature coefficient) emerge as common features. These observations are quantitatively compared with a model of many, parallel conduction paths across the boundary, taking into account both temperature-independent and thermally activated transport processes.",

author = "Li Liu and Nowak, {E. R.} and Jaeger, {H. M.} and Vuchic, {B. V.} and Merkle, {K. L.} and Buchholz, {D. B.} and Chang, {Robert P. H.}",

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AU - Merkle, K. L.

AU - Buchholz, D. B.

AU - Chang, Robert P. H.

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10.1103/PhysRevB.51.16164