Electronic structure and small polaron hole transport of copper aluminate

B. J. Ingram, T. O. Mason, R. Asahi, K. T. Park, A. J. Freeman

Research output: Contribution to journalArticlepeer-review

131 Scopus citations


High-temperature electrical property measurements (electrical conductivity, thermoelectric coefficient) on polycrystalline CuAlO2 exhibited characteristic small polaron features, i.e., low mobilities (0.1-0.4 cm2/V s) and an activation energy of ∼0.14 eV. The thermopower was p type (∼440 μV/K) and roughly temperature independent. The local-density full-potential linearized augmented-plane-wave method was used to calculate the band structure, densities of states, and optical properties (within the electric-dipole approximation) in order to account for the unique electronic and optical properties of this potential transparent conducting oxide.

Original languageEnglish (US)
Article number155114
Pages (from-to)1551141-1551147
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number15
StatePublished - Oct 15 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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