Hopping conduction in copper indium diselenide

Abstract
Electrical conduction by the variable-range-hopping mechanism has been observed in n-type CuInSe2 between 2 and 20 K and the effect of magnetic field on the parameters of Mott's law p = po exp [(To/T)5] studied. The variations in po, To and s with magnetic field, and hence the magnetoresistance itself, are attributed to two opposing mechanisms and are analysed in the light of existing models.