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Role of pinning potentials in heat transport through disordered harmonic chains
1Raman Research Institute, Bangalore 560080, India.
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,
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