Atomic mechanisms for the transport of charge by dislocations in nacl type crystals

Abstract

Dislocations on {110} planes may be electrically charged due to jogs or vacancies on their cores. Motion of jogs with dislocations can lead to transport of charge, but only in the direction of the Burgers vector. Motion of vacancies can in principle produce a flow of charge in any direction on the slip plane, but whether such processes occur and whether thermal activation is necessary depend on the energies of the possible configurations of a vacancy at the core.