Fig. 7: Mechanism of SB formation.
From: Signature of local stress states in the deformation behavior of metallic glasses

The upper panels display the distribution of the rotation field of the Eshelby-like quadrupoles around the STZs (red solid circles) for both soft and hard glasses. The rotation field can be correlated with the stress field shown in Fig. 5. Clockwise rotation (white color) is along the shear front, while counterclockwise rotation (black color) is perpendicular to it. Percolation of the activated STZs finally results in SB propagation in a specific direction (lower panels).