High temperature electronic conduction mechanisms in YBa2Cu4O8

B. S. Hong, Thomas O Mason

Research output: Contribution to journalArticle

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Abstract

Equilibrium electrical conductivity and Seebeck coefficient measurements over the temperature range 500-800°C in YBa2Cu4O8 (Y-124) exhibit evidence for two distinct conduction mechanisms, one metallic and one activated. It is speculated that the metallic mechanism is associated with the Cu-O planes, whereas the activated mechanism is associated with the Cu-O chains, just as in YBa2Cu3O6+y (Y-123). Like the other superconducting cuprates, Y-124 electrical properties obey a standard relationship of Seebeck coefficient versus logarithm of conductivity. Analysis of behavior in Y-124 may provide useful insight into the electrical and superconducting behavior of the other cuprates, particularly Y-123.

Original languageEnglish
Pages (from-to)3-7
Number of pages5
JournalSolid State Ionics
Volume49
Issue numberC
DOIs
Publication statusPublished - 1991

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ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

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