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Title: Effective microwave surface impedance of superconducting films in the mixed state

Abstract

The effective microwave surface impedance of multilayer structures made of high-{Tc} superconducting films in the mixed state, lossy dielectrics, and normal metals are theoretically calculated. The linear response of the superconductor to a microwave field is analyzed within both transmission line theory and the framework of self-consistent treatment of vortex dynamics reported by Coffey and Clem. The microwave properties are investigated as a function of static field and film thickness for nonresonant structures. The effect of substrate thickness on the resonant phenomenon is carefully studied as well. Numerical results reveal that the substrate resonance in the Meissner state behaved like a parallel lumped-parameter resonator, while in the vortex state it behaves as a series lumped resonant circuit. The basic distinction suggests that care should be taken in microwave applications when using superconducting films in the vortex state.

Authors:
;  [1]
  1. National Chiao-Tung Univ., Hsinchu (Taiwan, Province of China)
Publication Date:
Sponsoring Org.:
National Science Council, Taipei (Taiwan, Province of China)
OSTI Identifier:
509274
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics
Additional Journal Information:
Journal Volume: 33; Journal Issue: 3; Other Information: PBD: May 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 66 PHYSICS; ELECTRIC IMPEDANCE; SUPERCONDUCTING FILMS; HIGH-TC SUPERCONDUCTORS; COPPER OXIDES; MEISSNER-OCHSENFELD EFFECT; MICROWAVE EQUIPMENT; MICROWAVE RADIATION; CRITICAL FIELD

Citation Formats

Wu, C J, and Tseng, T Y. Effective microwave surface impedance of superconducting films in the mixed state. United States: N. p., 1997. Web.
Wu, C J, & Tseng, T Y. Effective microwave surface impedance of superconducting films in the mixed state. United States.
Wu, C J, and Tseng, T Y. 1997. "Effective microwave surface impedance of superconducting films in the mixed state". United States.
@article{osti_509274,
title = {Effective microwave surface impedance of superconducting films in the mixed state},
author = {Wu, C J and Tseng, T Y},
abstractNote = {The effective microwave surface impedance of multilayer structures made of high-{Tc} superconducting films in the mixed state, lossy dielectrics, and normal metals are theoretically calculated. The linear response of the superconductor to a microwave field is analyzed within both transmission line theory and the framework of self-consistent treatment of vortex dynamics reported by Coffey and Clem. The microwave properties are investigated as a function of static field and film thickness for nonresonant structures. The effect of substrate thickness on the resonant phenomenon is carefully studied as well. Numerical results reveal that the substrate resonance in the Meissner state behaved like a parallel lumped-parameter resonator, while in the vortex state it behaves as a series lumped resonant circuit. The basic distinction suggests that care should be taken in microwave applications when using superconducting films in the vortex state.},
doi = {},
url = {https://www.osti.gov/biblio/509274}, journal = {IEEE Transactions on Magnetics},
number = 3,
volume = 33,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1997},
month = {Thu May 01 00:00:00 EDT 1997}
}