Hopping versus bulk conductivity in transparent oxides: 12CaO · 7Al 2O 3

J. E. Medvedeva*, A. J. Freeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


A comparison of the electronic and optical properties of the mayenite-based oxide with the recently discovered transparent conducting oxides was described. The conductivity mechanism in the mayenite-based oxides is found to be different despite the apparent similarity of the characteristic optical absorption peaks. The connected charge-density maxima along the hopping path demonstrates the hopping nature of the conductivity. The high degree of delocalization of the conduction electrons obtained indicated that it cannot be classified as an electride.

Original languageEnglish (US)
Pages (from-to)955-957
Number of pages3
JournalApplied Physics Letters
Issue number6
StatePublished - Aug 9 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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