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Nonlinear surface impedance of YBCO thin films: measurements, modelling, and effects in devices.

Author(s) : OATES D. E., NGUYEN P. P., DRESSELHAUS G., DRESSELHAUS M. S., KOREN G., POLTURAK E.

Type of article: Article

Summary

High-critical temperature thin films continue to be of interest for passive device applications at microwave frequencies, but nonlinear effects may limit the performance. To understand these effects the authors have measured the nonlinear surface impedance in a number of YBCO thin films as a function of frequency from 1 to 18 gigahertz, radiofrequency surface magnetic field to 1500 oersteds, and temperature from 4 K to critical temperature. The loss mechanisms are extrinsic properties resulting from defects in the films. The authors also report preliminary measurements of the non linear impedance of Josephson junctions.

Details

  • Original title: Nonlinear surface impedance of YBCO thin films: measurements, modelling, and effects in devices.
  • Record ID : 1996-2094
  • Languages: English
  • Source: J. Supercond. - vol. 8 - n. 6
  • Publication date: 1995/12
  • Document available for consultation in the library of the IIR headquarters only.

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