TY - JOUR PY - 2011// TI - Robustness of avalanche dynamics in sheared amorphous solids as probed by transverse diffusion JO - Physical review E: Statistical, nonlinear, and soft matter physics A1 - Chattoraj, Joyjit A1 - Caroli, Christiane A1 - Lemaître, Anaël SP - 011501 EP - 011501 VL - 84 IS - 1-1 N2 - Using numerical simulations, we perform an extensive finite-size analysis of the transverse diffusion coefficient in a sheared 2D amorphous solid over a broad range of strain rates at temperatures up to the supercooled liquid regime. We thus obtain direct qualitative evidence for the persistence of correlations between elementary plastic events up to the vicinity of the glass transition temperature T_{g}. A quantitative analysis of the data, combined with a previous study of the T and γ[over ·] dependence of the macroscopic stress [Phys. Rev. Lett. 105, 266001 (2010)], leads us to conclude that the average avalanche size remains essentially unaffected by temperature up to T~0.75T_{g}.

Language: en

LA - en SN - 1539-3755 UR - http://dx.doi.org/ ID - ref1 ER -