Critical scalings and jamming in thermal colloidal systems

Abstract

During the jamming of thermal colloids, the first peak of the pair distribution function shows a maximum height $g_1^{\max }$. We find that $g_1^{\max }$ is accompanied by significant change of material properties and thus signifies the transition from unjammed to jammed glasses. The scaling laws at $g_1^{\max }$ lead to scaling collapse of structural and thermodynamic quantities, indicating the criticality of the T=0 jamming transition. The physical significance of $g_1^{\max }$ is highlighted by its coincidence with the equality of the kinetic and potential energy and the maximum fluctuation of the coordination number. In jammed glasses, we find the strong coupling between the isostaticity and flattening of the density of vibrational states at the isostatic temperature scaled well with the compression.

5 pages, 6 figures

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Cited by in corpus (18)

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• Thermal fluctuations, mechanical response, and hyperuniformity in jammed solids
• Contact Changes near Jamming
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• Disordered Solids Without Well-Defined Transverse Phonons: The Nature of Hard Sphere Glasses
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• Jamming in confined geometry: Criticality of the jamming transition and implications of structural relaxation in confined supercooled liquids