Direct transmission electron microscopic evidence was presented for the formation of dislocation loops directly following the occurrence of the pop-in effect during nano-indentation experiments.

Dislocation-Related Pop-In Effect in Gallium Arsenide. H.S.Leipner, D.Lorenz, A.Zeckzer, P.Grau: Physica Status Solidi A, 2001, 183[2], R4-6