Abstract
Abstract Results presented in an early paper about impurity conduction in n-type indium antimonide at low temperatures, in the presence of a magnetic field, have been questioned because no data on longitudinal magnetoresistance and Hall effect were published. New results are presented here on the transport processes in the same ranges of temperature and magnetic field when the impurity concentration is near the concentration corresponding to the metal–non-metal transition as defined by the Mott criterion. The evidence for an impurity band and of conduction by excitation to a mobility edge is reviewed in the light of the behaviour of longitudinal resistivity and Hall effect when the temperature and magnetic field are varied.
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