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Proceedings Paper

Polaronic conduction in electron-beam-evaporated Cu-GeO2 thin cermet films
Author(s): M. H. Rahman; A M. Al-Saie; J. Beynon
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Paper Abstract

Dc conductivity and Hall effect measurements were performed on Cu-GeO2 thin films with the aim of obtaining information about dc conduction mechanism. The conductivity results reveal that the activation energy is temperature dependent, increasing significantly above a btransition temperature Tt. Hall mobility showed a sign reversal around Tt, above which it increased with increasing temperature reaching a maximum at a critical temperature Tc. Above Tt, the conductivity is best described by small polaron hopping model. Below Tt, the Hall mobility shows a significant rise with decreasing temperature, indicating polaronic band conduction mechanism. Various parameters associated with polaronic formation are calculated.

Paper Details

Date Published: 8 April 1996
PDF: 6 pages
Proc. SPIE 2780, Metal/Nonmetal Microsystems: Physics, Technology, and Applications, (8 April 1996); doi: 10.1117/12.238306
Show Author Affiliations
M. H. Rahman, Dept. of Physics, Univ. of Bahrain (Bahrain)
A M. Al-Saie, Dept. of Physics, Univ. of Bahrain (Bahrain)
J. Beynon, Dept. of Physics, Brunel Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 2780:
Metal/Nonmetal Microsystems: Physics, Technology, and Applications
Benedykt W. Licznerski; Andrzej Dziedzic, Editor(s)

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