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Yield stress materials fail when the imposed stress crosses a criticalthreshold. A well-known dynamical response to the applied stress is thephenomenon of creep where the cumulative deformation grows sublinearly withtime, prior to failure or arrest. Using extensive molecular dynamicssimulations, we study such response for a model amorphous system, in theathermal limit, and probe how the annealing history of the initial statedetermines the observed behaviour to an applied shear stress. Further, weanalyze the microscopic dynamics in the vicinity of the yield threshold, usinglarge systems, and characterize the spatiotemporal signatures towards arrest orflow, at different scales.

Creep response of athermal amorphous solids under imposed shear stress