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Finite Size Analysis of Zero-Temperature Jamming Transition under Applied Shear Stress by Minimizing a Thermodynamic-Like Potential

Hao Liu, Xiaoyi Xie, and Ning Xu
Phys. Rev. Lett. 112, 145502 – Published 10 April 2014
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Abstract

By finding local minima of a thermodynamic-like potential, we generate jammed packings of frictionless spheres under constant shear stress σ and obtain the yield stress σy by sampling the potential energy landscape. For three-dimensional systems with harmonic repulsion, σy satisfies the finite size scaling with the limiting scaling relation σyϕϕc,, where ϕc, is the critical volume fraction of the jamming transition at σ=0 in the thermodynamic limit. The finite size scaling implies a length ξ(ϕϕc,)ν with ν=0.81±0.05, which turns out to be a robust and universal length scale exhibited as well in the finite size scaling of multiple quantities measured without shear and independent of particle interaction. Moreover, comparison between our new approach and quasistatic shear reveals that quasistatic shear tends to explore low-energy states.

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  • Received 9 December 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.145502

© 2014 American Physical Society

Authors & Affiliations

Hao Liu, Xiaoyi Xie, and Ning Xu*

  • CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China

  • *ningxu@ustc.edu.cn
  • Present address: Department of Physics, New York University, New York, NY 10012, USA

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Issue

Vol. 112, Iss. 14 — 11 April 2014

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