fracton


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fracton

[′frak‚tän]
(physics)
A quantum corresponding to a vibrational excitation of random fractal structure, which is localized in space.
A vibrational quantum of a fractal structure, either random or ordered, that may be localized or delocalized.
A quantum of a localized vibrational excitation of a disordered structure, whether or not it is fractal.
References in periodicals archive ?
This frequency is called crossover frequency [v.sub.co] and corresponds to the transition from phonon ([alpha] = 2) to fracton ([alpha] < 2) section of the dispersion curve.
Since these excitations are localized in the lattice of the percolation fractal clusters, they are called "fractons" [14].
At [T.sub.g], the number of molecules in the rigid state is in dynamic equilibrium with those in the liquid state and there exists a density of states [phi]([omega]) ~ [[omega].sup.[d.sub.f]-1] of phonon frequency [omega] ([d.sub.f] is the fracton dimension), which describes the transitions of the solid-to-liquid frequencies of the percolating rigidity cluster at [T.sub.g].