Surface resistance of an YBaCuO film in the megahertz range determined from the Q factor of a planar inductance coil: Effect of extrinsic factors

High-quality YBaCuO films are used to sequentially prepare a 10-GHz disk resonator and a planar inductance coil. The Q factor of the planar inductance coil at its resonance frequency (64 MHz) is much higher than the values reported for analogous structures. The measurement results are used to estima...

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Bibliographic Details
Published in:Technical physics 2010-06, Vol.55 (6), p.827-832
Main Authors: Masterov, D. V., Pavlov, S. A., Parafin, A. E.
Format: Article
Language:English
Subjects:
Analysis
Classical and Continuum Physics
Physics
Physics and Astronomy
Solid State
Superconductors
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Summary:High-quality YBaCuO films are used to sequentially prepare a 10-GHz disk resonator and a planar inductance coil. The Q factor of the planar inductance coil at its resonance frequency (64 MHz) is much higher than the values reported for analogous structures. The measurement results are used to estimate the surface resistance of the films at frequencies of 10 GHz and 64 MHz. The surface resistance measured at 64 MHz is more than fourfold of that calculated from the surface resistance measured at 10 GHz by the dependence R sur ∼ ω 2 . Our analysis demonstrates that extrinsic factors cannot substantially affect the measurement results; therefore, the deviation from the R sur ∼ ω 2 dependence in the megahertz range is determined by the intrinsic properties of the superconducting strip.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784210060137