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Phys. Rev. Lett. 93, 016001 (2004) [4 pages]

Subextensive Scaling in the Athermal, Quasistatic Limit of Amorphous Matter in Plastic Shear Flow

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Craig Maloney1,2 and Anaël Lemaître1,3
1Department of Physics, University of California, Santa Barbara, California 93106, USA
2Lawrence Livermore National Lab–CMS/MSTD, Livermore, California 94550, USA
3L.M.D.H.–Universite Paris VI, UMR 7603, 4 place Jussieu, 75005 Paris, France

Received 6 February 2004; published 2 July 2004

We present results on numerical simulations of an atomistic system undergoing plastic shear flow in the athermal, quasistatic limit. The system is shown to undergo cascades of local rearrangements, associated with quadrupolar energy fluctuations, which induce system-spanning events organized into lines of slip oriented along the Bravais axes of the simulation cell. A finite size scaling analysis reveals subextensive scaling of the energy drops and participation numbers, linear in the length of the simulation cell, in agreement with the observed real-space structure of the plastic events.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.016001
DOI:
10.1103/PhysRevLett.93.016001
PACS:
83.50.–v, 62.20.Fe, 62.20.Mk, 81.40.Lm