Electrical conduction in CdSe near the metal-insulator transition
- 1 March 1979
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 39 (3) , 253-266
- https://doi.org/10.1080/13642817908245361
Abstract
Strongly compensated samples of CdSe with 10l7–1018 cm−3 have been investi-gated. Two samples exhibit metallic and three non-metallic behaviour. The various regions of impurity-band conductivity have been identified from Hall and resistivity measurements. The density of states at the Fermi level has been estimated and compared with theory. A negative magnetoresistance has been observed in both metallic and non-metallic samples. A strongly temperature-dependent positive magnetoresistance in the variable-range-hopping regime is explained in terms of a simple extension of the Mikoshiba theory.Keywords
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