Quantum scattering by a magnetic flux screw dislocation

We investigate the quantum scattering of one electron by a screw dislocatio n with an internal magnetic flux. The Aharonov-Bohm effect for bound states is analyzed and we demonstrate that the wave function and the energy spect ra associated with the particle depend on the Burgers vectors of dislocatio n and the magnetic flux. We also calculate Berry's phase associated to the dynamics of the electrons in this background. For some specific values of t he magnetic flux there is a matching of the effects produced by the flux an d by the dislocation in such a way that there is neither scattering nor Ber ry's phase. (C) 2001 Elsevier Science B.V. All rights reserved.