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arXiv · 2006.15185

Hyperuniformity in cyclically driven glasses

Saheli Mitra·Giuseppe Foffi·Anshul D. S. Parmar·Premkumar Leishangthem·Srikanth Sastry
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Abstract

We present a numerical investigation of the density fluctuations in a model glass under cyclic shear deformation. At low amplitude of shear, below yielding, the system reaches a steady absorbing state in which density fluctuations are suppressed revealing a clear fingerprint of hyperuniformity up to a finite length scale. The opposite scenario is observed above yielding, where the density fluctuations are strongly enhanced. We demonstrate that the transition to this state is accompanied by a spatial phase separation into two distinct hyperuniform regions, as a consequence of shear band formation above the yield amplitude.

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Saheli Mitra, Giuseppe Foffi, Anshul D. S. Parmar, Premkumar Leishangthem, Srikanth Sastry. 2020-06-26. Hyperuniformity in cyclically driven glasses. https://doi.org/10.1088/1742-5468%2Fabdeb0

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