Surface Impedance Studies of the High Tc Oxide Superconductors

Abstract

We review briefly our results on measurements of the millimeter wave surface impedance of ceramic, thin film and single crystal samples of the high- Tc oxide superconductors. The observed losses and temperature dependences do not agree with BCS theory. We discuss our recent measurements of single crystal Bi2CaSr2Cu2Ox and the effect of the application of a perpendicular magnetic field. We consider the possibilities of intrinsic and defect mechanisms to explain our observations. In particular, we discuss the effects of weakly coupled granular films on surface impedance. (Author) (TTL)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1988
Accession Number
ADA228915

Entities

People

  • A. Kapitulnik
  • John P. Carini
  • Lawrence Drabeck
  • Malcolm Beasley
  • T. L. Hylton

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Boundaries
  • Capacitance
  • Ceramic Materials
  • Crystals
  • Current Density
  • Films
  • Frequency
  • Grain Boundaries
  • Impedance
  • Low Temperature
  • Magnetic Fields
  • Materials
  • Millimeter Waves
  • Single Crystals
  • Thick Films
  • Thin Films
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Superconducting Magnet Technology
  • Theoretical Analysis.

Technology Areas

  • 5G