High temperature electronic conduction mechanisms in YBa2Cu4O8

B. S. Hong*, T. O. Mason

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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 (US)
Pages (from-to)3-7
Number of pages5
JournalSolid State Ionics
Issue numberC
StatePublished - Dec 1991

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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