Vortex pinning in untwinned YBCO

Vortex pinning in untwinned YBCO

Three different AC and DC experiments have been performed in untwinned YBCO to clarify the mechanism of vortex pinning. Pinning by surface irregularities is the only mechanism consistent with all experiments. This questions usual interpretation in terms of bulk collective pinning theories. In partic...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2000, Vol.341, p.1059-1060
Hauptverfasser: Pautrat, A., Goupil, C., Simon, Ch, Lütke-Entrup, N., Plaçais, B., Mathieu, P., Simon, Y., Rykov, A.I., Tajima, S.
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Sprache:eng
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Zusammenfassung:Three different AC and DC experiments have been performed in untwinned YBCO to clarify the mechanism of vortex pinning. Pinning by surface irregularities is the only mechanism consistent with all experiments. This questions usual interpretation in terms of bulk collective pinning theories. In particular, the irreversibility line appears as the dissapearance of superficial critical current.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(00)00782-6