Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.78.024305
Title: Mechanisms causing thermal rectification: The influence of phonon frequency, asymmetry, and nonlinear interactions
Authors: Zeng, N.
Wang, J.-S. 
Issue Date: 30-Jul-2008
Citation: Zeng, N., Wang, J.-S. (2008-07-30). Mechanisms causing thermal rectification: The influence of phonon frequency, asymmetry, and nonlinear interactions. Physical Review B - Condensed Matter and Materials Physics 78 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.78.024305
Abstract: We have determined the mechanisms leading to thermal rectification by applying the nonequilibrium Green's function method to study thermal transport through a one-dimensional asymmetric lattice. Thermal rectification occurs in the presence of nonlinear interactions and a nonuniform phonon frequency distribution. We show that thermal rectification results from the contribution of high-frequency phonons; a thermal rectifier can thus be realized by filtering out high-frequency phonons in a single direction. Using these results, we present methods of increasing the level of rectification, and also discuss possible limitations on thermal rectifier performance. © 2008 The American Physical Society.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/97172
ISSN: 10980121
DOI: 10.1103/PhysRevB.78.024305
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