SPATIOTEMPORAL EVOLUTION OF LOCAL TEMPERATURE EXCITATIONS IN DISORDERED HARMONIC-SYSTEMS

Authors
WAGNER M LUTZE A VILIANI G FRIZZERA W PILLA O
Citation
M. Wagner et al., SPATIOTEMPORAL EVOLUTION OF LOCAL TEMPERATURE EXCITATIONS IN DISORDERED HARMONIC-SYSTEMS, Physica. B, Condensed matter, 190(2-3), 1993, pp. 285-306
Citations number
41
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
190
Issue
2-3
Year of publication
1993
Pages
285 - 306
Database
ISI
SICI code
0921-4526(1993)190:2-3<285:SEOLTE>2.0.ZU;2-E
Abstract
In strongly disordered condensed systems the Peierls-Boltzmann type of energy transport theory is not applicable. We present an alternative approach based on a local temperature excitation. The formalism is exe mplified analytically and numerically for the Hamiltonian chain and fo r a chain with a random array of disturbed springs. Unexpected feature s are found, e.g. superdiffusion. Localization is verified also.