Temperature dependence of the critical current of YBa2Cu3O7−δ films
2017
The temperature dependence of the critical current of YBa2Cu3O7−δ films is studied experimentally. The performed analysis allows separating two components of the critical current owing to pinning of vortices both on defects in the volume of the superconductor and on oxygen vacancies in the CuO2 planes. The established temperature dependences of components make it possible to correctly describe the behavior of the total critical current in the studied temperature range from 4.2 K to the irreversibility temperature.
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