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arXiv · 1003.5668

Anomalous thermal properties of a harmonic chain with correlated isotopic disorder

I. F. Herrera-González·F. M. Izrailev·L. Tessieri
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Abstract

We analyse the thermal properties of a harmonic chain with weak correlated disorder. With the use of a perturbative approach we derive analytical expressions for the time-evolution of the chain temperature and of the heat flow when both ends of the chain are coupled to heat baths. Our analytical and numerical results demonstrate that specific long-range correlations of the isotopic disorder can suppress or enhance the vibrational modes in pre-defined frequency windows. In this way one can arrange a frequency-selective heat flow through disordered chains.

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I. F. Herrera-González, F. M. Izrailev, L. Tessieri. 2010-03-29. Anomalous thermal properties of a harmonic chain with correlated isotopic disorder. https://doi.org/10.1209/0295-5075%2F90%2F14001

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