Role of pinning potentials in heat transport through disordered harmonic chains

Roy, Dibyendu; Dhar, Abhishek

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3700

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DC Field	Value	Language
dc.contributor.author	Roy, Dibyendu	-
dc.contributor.author	Dhar, Abhishek	-
dc.date.accessioned	2009-01-29T10:27:58Z	-
dc.date.available	2009-01-29T10:27:58Z	-
dc.date.issued	2008-11	-
dc.identifier.citation	Physical Review E, 2008, Vol.78, 051112	en
dc.identifier.issn	E-ISSN: 1550-2376	-
dc.identifier.issn	P-ISSN: 1539-3755	-
dc.identifier.uri	http://hdl.handle.net/2289/3700	-
dc.description	Open Access.	en
dc.description.abstract	The role of quadratic on-site pinning potentials on determining the size (N) dependence of the disorder averaged steady state heat current <J> in an isotopically disordered harmonic chain connected to stochastic heat baths is investigated. For two models of heat baths, namely white noise baths and Rubin's model of baths, we find that the N dependence of <J> is the same and depends on the number of pinning centers present in the chain. In the absence of pinning, <J>Fr~1/N1/2 while in the presence of one or two pins <J>Fi~1/N3/2. For a finite (n) number of pinning centers with 2<=n<<N we provide heuristic arguments and numerical evidence to show that <J>n~1/Nn−1/2. We discuss the relevance of our results in the context of recent experiments.	en
dc.language.iso	en	en
dc.publisher	American Physical Society	en
dc.relation.uri	http://arxiv.org/abs/0806.4693	en
dc.relation.uri	http://dx.doi.org/10.1103/PhysRevE.78.051112	en
dc.rights	2008 The American Physical Society	en
dc.title	Role of pinning potentials in heat transport through disordered harmonic chains	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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