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Influence of thermal treatment and oxygen stoichiometry on paraconductivity of YBa2Cu3O7−δ pellets (1994)

Paris, C. ; Fontana, M. P.

Springer

Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1843-1849

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Details

ISSN: 0392-6737

Schlagwort(e): Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) ; Conference proceedings

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Summary This work is focused on how oxygen stoichiometry and distribution affects the pretransitional region in YBa2Cu3O7−δ pellets prepared by different thermal treatments starting from the same batch with oxygen content 6.94. We find that slightly deoxygenated samples, which show higherT c and narrower transition than the starting material, also exhibit a more pronounced rounding of the resistivity extending towards higher temperatures. We analyse the presence and the extension of regions with different power law behaviour of excess conductivityvs. temperature.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02462183

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