Share

SURVEY OF MICROWAVE SURFACE IMPEDANCE DATA OF HIGH-CRITICAL TEMPERATURE SUPERCONDUCTORS. EVIDENCE FOR NONPAIRING CHARGE CARRIERS.

Author(s) : MULLER G.

Type of article: Article, Review

Summary

THE MICROWAVE SURFACE IMPEDANCE OF THE HIGH-CRITICAL TEMPERATURE OXIDE SUPERCONDUCTORS HAS BEEN MEASURED AT MANY LABORATORIES AROUND THE WORLD. A SURVEY OF THEIR DATA BETWEEN 100 MEGAHERTZ AND 150 GIGAHERTZ FOR POLYCRYSTALLINE AS WELL AS SINGLE CRYSTALLINE SAMPLES IS GIVEN, FOCUSING ON YAU. THESE RESULTS REVEAL A VERY SIMILAR TEMPERATURE DEPENDENCE OF THE SURFACE IMPEDANCE CLOSE TO CRITICAL TEMPERATURE BUT AN ANOMALOUS HIGH RESIDUAL SURFACE RESISTANCE AT LOWER TEMPERATURES. BOTH FEATURES CAN BE EXPLAINED BY THE ASSUMPTION THAT OXIDE SUPERCONDUCTORS CONTAIN A SIGNIFICANT NUMBER OF NONPAIRING CHARGE CARRIERS. THE POSSIBLE ORIGIN OF THE NONPAIRING CHARGE CARRIERS AND THEIR IMPACT ON THE APPLICABILITY OF THE OXIDE SUPERCONDUCTORS IS BRIEFLY DISCUSSED.

Details

  • Original title: SURVEY OF MICROWAVE SURFACE IMPEDANCE DATA OF HIGH-CRITICAL TEMPERATURE SUPERCONDUCTORS. EVIDENCE FOR NONPAIRING CHARGE CARRIERS.
  • Record ID : 1991-2405
  • Languages: English
  • Source: J. Supercond. - vol. 3 - n. 3
  • Publication date: 1990/09
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (8)
See the source

Indexing