Cross-over from phonons to fractons

Amnon Aharony, Ora Entin-Wohlman, S. Alexander, R. Orbach

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Recent theoretical results concerning the cross-over from phonon-like to fracton-like behaviour of excitations obeying linear equations of motion (for example, vibrational modes or spin waves in antiferromagnets, in systems which are fractal on short length-scales and homogeneous on long scales) are reviewed. Particularly, we discuss the scaling theory for the density of states, the lifetime of excitations due to elastic scattering by structural inhomogeneities, and the structure. factor for scattering from these excitations.

Original languageEnglish
Pages (from-to)949-955
Number of pages7
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume56
Issue number6
DOIs
StatePublished - 1 Jan 1987
Externally publishedYes

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