| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1544050 | Physica E: Low-dimensional Systems and Nanostructures | 2015 | 8 Pages |
Abstract
We study the effects of a composition gradient and of a non-vanishing heat flux on the phase velocity of thermal waves along a graded system. We take into account non-local and non-linear effects by applying a generalized heat transport equation. We compare the results for high-frequency and low-frequency waves. For low frequency, we discuss the conditions in which thermal waves may propagate in SixGe1−xSixGe1−x and (Bi1−xSbx)2Te3(Bi1−xSbx)2Te3 systems. For high frequency, we discuss the influence of the relaxation of the flux of the heat flux on the heat wave propagation.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
D. Jou, I. Carlomagno, V.A. Cimmelli,