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A new method for a local study of nonlinear microwave properties of superconductors

Evgeny E. Pestov·Yury N. Nozdrin·Vladislav V. Kurin
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Abstract

We report a set of experimental data on local third-harmonic generation at microwave frequencies (0.5 GHz) in $YBa_2Cu_3O_7$ and Nb films. For local investigations of the nonlinear response a probe with inductive coupling was elaborated. The map of the nonlinear microwave response of a $YBa_2Cu_3O_7$ thin film is plotted below $T_c$ with high resolution. The third-harmonic power is measured as a function of temperature, input power and dc magnetic field at some areas of the film. The correlation between the depinning current density ${J_p}$ and the nonlinear microwave response is also demonstrated.

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Evgeny E. Pestov, Yury N. Nozdrin, Vladislav V. Kurin. 2000-05-29. A new method for a local study of nonlinear microwave properties of superconductors. https://arxiv.org/abs/cond-mat/0005501

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