  We study the statistical properties of the yielding transition in model
amorphous solids in the limit of slow, athermal deformation. Plastic flow
occurs via alternating phases of elastic loading punctuated by rapid
dissipative events in the form of collective avalanches. We investigate their
characterization through energy vs. stress drops and at multiple stages of
deformation, thus revealing a change of spatial extent of the avalanches and
degree of stress correlations as deformation progresses. We show that the
statistics of stress and energy drops only become comparable for large events
in the steady flow regime. Results for the critical exponents of the yielding
transition are discussed in the context of prior studies of similar type,
revealing the influence of model glass and preparation history.
