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The random free-energy barrier model for ac conduction in disordered solids
Open accessAbstract
A brief review of the history of ac ionic and electronic conduction in disordered solids is given, followed by a detailed discussion of the simplest possible realistic model: the random free-energy barrier model. This model assumes conduction takes place by hopping, where the hopping charge carriers are subject to spatially randomly varying energy barriers. The model is solved in the continuous time random walk and in the effective medium approximation, and it is shown that the two solutions are almost indistinguishable. In the random free-energy barrier model, the frequency-dependent conductivity is completely determined by the dc conductivity and the dielectric loss strength. The model correctly predicts all qualitative features of ac conduction in disordered solids, and a comparison to experiment on a large number of solids shows that the model is also quantitatively satisfactory.
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Cited by
A Review of the Terahertz Conductivity of Bulk and Nano-Materials
Lloyd-Hughes, J., & Jeon, T.-I. (2012) · Journal of Infrared, Millimeter, and Terahertz Waves · doi:10.1007/s10762-012-9905-y · Cited by 503
Fundamental questions relating to ion conduction in disordered solids
Dyre, J. C., Maass, P., Roling, B., & Sidebottom, D. L. (2009) · Reports on Progress in Physics · doi:10.1088/0034-4885/72/4/046501 · Cited by 432
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Metadata
- Authors
- Dyre, J. C.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1988-09-01
- Volume
- 64
- Issue
- 5
- Pages
- 2456-2468
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W1990892352
- Cited by
- 997
- References
- 0
- FWCI
- 2.33
- Type
- journal article
- Language
- en
- Open access
- green
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- Dyre, J. C. (1988). The random free-energy barrier model for ac conduction in disordered solids. Journal of Applied Physics. https://doi.org/10.1063/1.341681
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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