Fluctuation conductivity of a c-axis-oriented YBa2Cu3Oy film prepared by chemical vapor deposition

J. Sugawara, H. Iwasaki, N. Kobayashi, H. Yamane, T. Hirai

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38 Citations (Scopus)

Abstract

The magnetoresistance of a highly c-axis-oriented chemical-vapor-deposition film of YBa2Cu3Oy was measured in the temperature range TcT103 K for both the Hc axis and Hc axis. The analysis has been done on the basis of the superconducting fluctuation theory for the clean limit, and a good fit has been obtained for the temperature and the magnetic-field dependences of the magnetoconductance in the cases of the Hc axis and Hc axis. The results indicated that all of both orbital and Zeeman effects of the Aslamasov-Larkin and the Maki-Thompson terms contributed to the fluctuation conductivity. The superconducting coherence lengths were estimated to be ab(0)=11.5 and c(0)=3.2 in addition to the phase breaking time of the carrier =8×10-14 sec at 100 K.

Original languageEnglish
Pages (from-to)14818-14822
Number of pages5
JournalPhysical Review B
Volume46
Issue number22
DOIs
Publication statusPublished - 1992 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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