Averaging of the Electron Effective Mass in Multicomponent Transparent Conducting Oxides

Author

Julia E. Medvedeva, Missouri University of Science and TechnologyFollow

Abstract

We find that layered materials composed of various oxides of cations with s² electronic configuration, XY₂O₄, X = in or Sc, Y = Ga, Zn, Al, Cd and/or Mg, exhibit isotropic electron effective mass which can be obtained via averaging over those of the corresponding single-cation oxide constituents. This effect is due to a hybrid nature of the conduction band formed from the s-states of all cations and the oxygen p-states. Moreover, the observed insensitivity of the electron effective mass to the oxygen coordination and to the distortions in the cation-oxygen chains suggests that a similar behavior can be expected in the technologically important amorphous state. These findings significantly broaden the range of materials as efficient transparent conductor hosts.

Recommended Citation

J. E. Medvedeva, "Averaging of the Electron Effective Mass in Multicomponent Transparent Conducting Oxides," Europhysics Letters, Institute of Physics - IOP Publishing, Jan 2007.

The definitive version is available at https://doi.org/10.1209/0295-5075/78/57004

Department(s)

Physics

Keywords and Phrases

Averaging; Electron Effective Mass

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2007 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Jan 2007