Variable Range Hopping (VRH) Model in Manganese Oxides

Abstract:

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This is a study of data analyzing by using a theoretical model for mixed-valence manganites Ln1−xAxMnO3, which exhibit a complex transport behaviour. In the high-temperature (T>TP) paramagnetic insulating regime, the resistivity of samples obeys the T-1/4 law, characteristic of variable range hopping (VRH). We address this kind of transport process as involving variable-range hopping of small polarons, and derive the resistivity expression: .

Info:

Periodical:

Defect and Diffusion Forum (Volumes 303-304)

Edited by:

David J. Fisher

Pages:

117-123

DOI:

10.4028/www.scientific.net/DDF.303-304.117

Citation:

A. Huda "Variable Range Hopping (VRH) Model in Manganese Oxides", Defect and Diffusion Forum, Vols. 303-304, pp. 117-123, 2010

Online since:

July 2010

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$35.00

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