The Peierls-Nabarro model was here extended to describe dislocation mobility in piezoelectric materials. The Peierls stress of a screw dislocation in a piezoelectric material was calculated based on the generalized Peierls-Nabarro model and linear piezoelectricity theory.

Peierls Stress of a Screw Dislocation in a Piezoelectric Medium. S.Li, A.Gupta: Applied Physics Letters, 2004, 85[12], 2211-3