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Measurements and modeling of linear and nonlinear effects in striplines

Journal Article · · Journal of Superconductivity; (United States)
DOI:https://doi.org/10.1007/BF00618136· OSTI ID:7233482
 [1]; ;  [2]; ; ;  [3]
  1. Massachusetts Inst. of Technology, Lexington, MA (United States)
  2. Massachusetts Inst. of Technology, Cambridge, MA (United States) Rome Lab., Hanscom AFB, MA (United States)
  3. Massachusetts Inst. of Technology, Cambridge, MA (United States)
We present measurements of surface impedance Z[sub S] as a function of frequency, temperature, and rf magnetic field for high-quality epitaxial YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] thin films using a stripline-resonator technique that measures the Q of the resonator vs. input power. The results have been modeled using Ginzburg-Landau theory at moderate fields, and the Bean critical state model at high fields. Good agreement has been obtained between the model and the measurements. We also discuss the current distributions in the stripline for both low power when Z[sub S] is linear and high power when Z[sub S] is nonlinear. 25 refs., 13 figs.
OSTI ID:
7233482
Journal Information:
Journal of Superconductivity; (United States), Journal Name: Journal of Superconductivity; (United States) Vol. 5:4; ISSN JOUSEH; ISSN 0896-1107
Country of Publication:
United States
Language:
English

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