Nature of hole states in cuprate superconductors

Apurva Mehta, Joseph DiCarlo, Alexandra Navrotsky

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa2-xAxCuO4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa2Cu3O6+δ, a model is proposed that assigns a major fraction of the holes in these "Cu3+" materials to states which chemically are "peroxidelike," involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO2, KCuO2,La2-xSrxCuO4-x/2+δ, and YBa2Cu3O6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends.

Original languageEnglish (US)
Pages (from-to)173-185
Number of pages13
JournalJournal of Solid State Chemistry
Issue number1
StatePublished - Nov 1992
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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