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

J. E. Medvedeva; A. J. Freeman

doi:10.1063/1.1781362

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

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

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	955-957
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	6
DOIs	https://doi.org/10.1063/1.1781362
State	Published - Aug 9 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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

abstract = "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.",

author = "Medvedeva, {J. E.} and Freeman, {A. J.}",

note = "Funding Information: The authors thank M. I. Bertoni and T. O. Mason for close collaborations in carrying out suggested conductivity measurements for the UV-light protected samples. Work was supported by the DOE (Grant No. DE-FG02-88ER45372) and the NSF through its MRSEC Program at the Northwestern University Materials Research Center. Computational resources have been provided by the DOE supported NERSC.",

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AU - Medvedeva, J. E.

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N1 - Funding Information: The authors thank M. I. Bertoni and T. O. Mason for close collaborations in carrying out suggested conductivity measurements for the UV-light protected samples. Work was supported by the DOE (Grant No. DE-FG02-88ER45372) and the NSF through its MRSEC Program at the Northwestern University Materials Research Center. Computational resources have been provided by the DOE supported NERSC.

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AB - 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.

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