Scattering of electrons on screw dislocations

A previously established general framework for the description of long-wave length quantum states of electrons in a crystal with topological defects is used to discuss the scattering of electrons on a screw dislocation. The co rresponding Schrodinger equation contains contributions of the type of a ve ctor potential as well as of a repulsive scalar potential. Together they gi ve rise to modified Aharonov-Bohm interferences in the scattering amplitude , for which the far-field expression is calculated exactly.