Radiative properties of superconducting Y-Ba-Cu-O thin films

P. E. Phelan, M. I. Flik, C. L. Tien

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Some applications of thin-film high-temperature superconductors, such as bolometers, radiation shielding, and space-cooled electronics, require knowledge of the superconducting-state radiative properties. At present, no general predictive model of the radiative properties has been presented. In this work, reflectance predictions based on two of the major theories of the superconducting state, the classical Drude- London theory and the quantum-mechanical Mattis-Bardeen theory, are compared with the available experimental data to determine the best method for predicting the radiative properties of thin-film Y-Ba-Cu-O. It is seen that the Mattis-Bardeen theory is more successful than the Drude-London theory in predicting the reflectance. Consequently, approximate formulae for the Mattis-Bardeen theory are developed, thus enhancing the theory’s usefulness for engineering calculations.

Original languageEnglish (US)
Pages (from-to)487-493
Number of pages7
JournalJournal of Heat Transfer
Volume113
Issue number2
DOIs
StatePublished - May 1991
Externally publishedYes

Keywords

  • Cryogenics
  • Radiation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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