It was noted that, in the case of a low dislocation density, an intense ultrasound wave could cause jog motion, in screw dislocations, which was accompanied by the formation of point defects. Theoretical analyses and computer simulations of the motion were carried out. Defect modification took place only above a critical ultrasound amplitude. Under certain threshold ultrasound intensities, the jog began to oscillate and both vacancies and interstitials were continuously generated. Acoustic emission and photoconductivity experiments confirmed the acousto-dislocation interaction which led to defect modification.

Defect modification by ultrasound in crystals I.V.Ostrovskii, J.M.Khalack, A.B.Nadtochii, H.G.Walther: Solid State Phenomena, 1999, 67-68, 497-502