Two- and three-dimensional flux unbinding inYBa2Cu3O7thin films at small magnetic fields
Autor: | DeObaldia E, O'Malley M, P. M. Mankiewich, Skocpol Wj, Chen Sq |
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Rok vydání: | 1993 |
Předmět: | |
Zdroj: | Physical Review B. 47:2936-2939 |
ISSN: | 1095-3795 0163-1829 |
Popis: | A vortex-unbinding mechanism for dissipation in epitaxial thin-film microstrips of YBa 2 Cu 3 O 7 is established for zero and small magnetic fields. Excellent self-consistent quantitative agreement is found with the two-dimensional Ginzburg-Landau Coulomb gas theory at low currents above the Kosterlitz-Thouless temperature T k , and with a simple nucleation theory for three-dimensional vortex rings at higher currents and lower temperatures |
Databáze: | OpenAIRE |
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