Screened-exchange determination of the electronic properties of monoclinic, tetragonal, and cubic zirconia

J. E. Medvedeva*, A. J. Freeman, C. B. Geller, D. M. Rishel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


First-principles electronic band structure investigations of monoclinic, tetragonal, and cubic Zr O2 reveal the highly anisotropic nature of the conduction and valence band topologies in the monoclinic phase with electron and hole effective masses differing by over an order of magnitude in perpendicular directions. The planes of relatively high implied electron and hole mobilities intersect along a single crystallographic direction, making this the only direction readily available for exciton motion. Conversely, in the tetragonal and cubic phases, charge carrier effective masses are more isotropic and exciton motion is less restricted. These findings may explain recent experimental observations suggesting that exciton production via gamma irradiation in zirconia crystallites immersed in water is responsible for the accelerated dissociation of adsorbed water molecules on crystallite surfaces, and for the specificity of the effect to the tetragonal zirconia phase.

Original languageEnglish (US)
Article number235115
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number23
StatePublished - Dec 13 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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