Electron-Dislocation Interaction in Copper

We present measurements of the influence of magnetic fields on the flow stress of copper and show that the mobile dislocations are affected by magnetic fields. This observation is consistent with the mobile dislocations moving at high velocities, so that inertial effects must be considered when dislocations move in copper. We describe the effect by treating the dislocation according to a string model with the inclusion of a damping term due to electrons.