Phase-sensitive measurements of nonlinearity in high-temperature superconductor thin films

@article{Booth2005PhasesensitiveMO,
  title={Phase-sensitive measurements of nonlinearity in high-temperature superconductor thin films},
  author={J. C. Booth and K. Leong and S. Schima and J. A. Jargon and D Degroot and R. E. Schwall},
  journal={IEEE Transactions on Applied Superconductivity},
  year={2005},
  volume={15},
  pages={1000-1003}
}
We present new frequency-dependent measurements of both the magnitude and phase of the nonlinear response in superconducting thin films at microwave frequencies obtained using a large-signal network analyzer. Our measurements show that the nonlinear inductance dominates the nonlinear response in thin YBCO films at 76 K, and our analysis yields two current-density scales corresponding to the real and imaginary components of the nonlinear response. The current-density scale associated with the… CONTINUE READING
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