Density of states of colloidal glasses

Details Density of states of colloidal glasses Density of states of colloidal glasses

2009-10-19

arxiv.org/abs/0910.3231v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

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.

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