Krishnan, H. ; Sankaranarayanan, V. ; Radhakrishnan, Vijayashree ; Subramaniam, C. K. ; Srinivasan, R. ; V., G. (1989) Grain-boundary effects on the resistivity of zinc-doped Y-Ba-Cu-O Physical Review B: Condensed Matter and Materials Physics, 40 (4). pp. 2639-2641. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v40/i4/p2639_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.40.2639
Abstract
The electrical resistivity of the granular superconductors, YBa2Cu3-xZnxO7-y with x=0.05, 0.075, 0.1, 0.15, and 0.2, has been measured precisely below the midpoint of the superconducting transition. The expression for electrical resistivity due to Ausloos fits the data over a small temperature region. Besides, the value estimated for the average volume of the intergranular junction on the basis of the above fit is about a few thousands of A∓3 which is physically not reasonable. On the other hand, the results obtained could be explained better on the basis of a model that assumes that the fraction of the grain boundaries not becoming superconducting at a temperature T follows a Gaussian distribution.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 57906 |
Deposited On: | 30 Aug 2011 09:05 |
Last Modified: | 30 Aug 2011 09:05 |
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