Disorder-induced mode coupling and symmetry breaking in amorphous solids

Applying very small purely radial strains on amorphous solids in radial geometry one observes elastic responses that break the radial symmetry. Without any plasticity involved, the responses indicate mode coupling contributions even for minute strains. We show that these symmetry-breaking responses...

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Bibliographic Details
Published in:Europhysics letters 2023-05, Vol.142 (3), p.36001
Main Authors: Kumar, Avanish, Procaccia, Itamar, Singh, Murari
Format: Article
Language:English
Subjects:
Broken symmetry
Coupled modes
Coupling
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Summary:Applying very small purely radial strains on amorphous solids in radial geometry one observes elastic responses that break the radial symmetry. Without any plasticity involved, the responses indicate mode coupling contributions even for minute strains. We show that these symmetry-breaking responses are due to disorder, typical to amorphous configurations. The symmetry-breaking responses are quantitatively explained using the classical Michell solutions which are excited by mode coupling.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/accc52