Deviational Phonons and Thermal Transport at the Nanoscale
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Deviational phonons.pdf
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Author(s)
Peraud, Jean-Philippe Michel
Hadjiconstantinou, Nicolas
Date Issued
November 2012
Journal
Proceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition IMECE2012
Publisher
American Society of Mechanical Engineers (ASME)
Citation
Péraud, Jean-Philippe M., and Nicolas G. Hadjiconstantinou. “Deviational Phonons and Thermal Transport at the Nanoscale.” ASME 2012 International Mechanical Engineering Congress & Exposition IMECE2012, 9-15 November, 2012, Houston, Texas, USA, ASME, 2012. © 2012 by ASME
Version
Final published version
Abstract
We present a new method for simulating phonon transport at the nanoscale. The proposed approach is based on the recently developed energy-based deviational Monte Carlo method by the authors [Phys. Rev. B 84, 205331, 2011] which achieves significantly reduced statistical uncertainty compared to standard Monte Carlo methods by simulating only the deviation from equilibrium. Here, we show that under linearized conditions (small temperature differences) the trajectories of individual particles simulating the deviation from equilibrium can be decoupled and can thus be simulated independently, without introducing any additional approximation. This leads to a particularly simple and efficient simulation method that can be used to treat steady and transient phonon transport problems in arbitrary three-dimensional geometries.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1115/IMECE2012-87547
