Rapid temperature variation of hopping conduction in GaAs low-temperature bolometers

Abstract
The very rapid temperature dependence between 1 and 4 K of the resistivity of GaAs bolometers was found to follow ρ∼exp(AT−1/4). The most plausible attribution of this behavior was to variable range, single particle, hopping, and our data were consistent with the model of Apsley and Hughes.