Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2010-03-29
Europhysics Letters, vol. 90, p. 14001 (2010)
Physics
Condensed Matter
Disordered Systems and Neural Networks
15 pages, 4 figures
Scientific paper
10.1209/0295-5075/90/14001
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.
Herrera-González I. F.
Izrailev Felix M.
Tessieri L.
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