Please use this identifier to cite or link to this item: https://doi.org/10.1209/epl/i2006-10079-7
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dc.titleEffective phonons in anharmonic lattices: Anomalous vs. normal heat conduction
dc.contributor.authorLi, N.
dc.contributor.authorTong, P.
dc.contributor.authorLi, B.
dc.date.accessioned2014-10-16T09:22:28Z
dc.date.available2014-10-16T09:22:28Z
dc.date.issued2006-07-01
dc.identifier.citationLi, N., Tong, P., Li, B. (2006-07-01). Effective phonons in anharmonic lattices: Anomalous vs. normal heat conduction. Europhysics Letters 75 (1) : 49-55. ScholarBank@NUS Repository. https://doi.org/10.1209/epl/i2006-10079-7
dc.identifier.issn02955075
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/96354
dc.description.abstractWe study heat conduction in one-dimensional (1D) anharmonic lattices analytically and numerically by using an effective phonon theory. It is found that every effective phonon mode oscillates quasi-periodically. By weighting the power spectrum of the total heat flux in the Debye formula, we obtain a unified formalism that can explain anomalous heat conduction in momentum conserved lattices without on-site potential and normal heat conduction in lattices with on-site potential. Our results agree very well with numerical ones for existing models such as the Fermi-Pasta-Ulam model, the Prenkel-Kontorova model and the Φ4 model etc. © EDP Sciences.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1209/epl/i2006-10079-7
dc.description.sourcetitleEurophysics Letters
dc.description.volume75
dc.description.issue1
dc.description.page49-55
dc.identifier.isiut000238418300008
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