Density of states of colloidal glasses

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Authors
Ghosh, Antina
Chikkadi, Vijayakumar K.
Schall, Peter
Kurchan, Jorge
Bonn, Daniel
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Abstract
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Glasses are structurally liquid-like, but mechanically solid-like. Most attempts to understand glasses start from liquid state theory. Here we take the opposite point of view, and use concepts from solid state physics. We determine the vibrational modes of a colloidal glass experimentally, and find soft low-frequency modes that are very different in nature from the usual acoustic vibrations of ordinary solids. These modes extend over surprisingly large length scales.
Keywords
Condensed Matter - Soft Condensed Matter, Condensed Matter - Statistical Mechanics
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