Second-order perturbation theory based on multiple time scale analysis is used to illuminate three-phonon scattering processes in the one-dimensional anharmonic monoatomic crystal. Molecular dynamics simulation techniques in conjunction with spectral energy density analyses are used to quantify phonon mode lifetime in (1) the monoatomic crystal and (2) a series of superlattice configurations. It is found that the lifetime of vibrational modes in the monoatomic crystal is inherently long, because the conditions for conservation of wave vector and frequency are pathologically difficult to satisfy. Superlattice configurations, however, offer band-folding effects, whereby the availability of phonon decay channels decreases the lifetime of the vibrational modes supported by the medium.
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August 2013
Research-Article
Phonon Scattering in One-Dimensional Anharmonic Crystals and Superlattices: Analytical and Numerical Study
Nichlas Z. Swinteck,
Nichlas Z. Swinteck
1
Postdoctoral Research Associate
e-mail: swinteck@email.arizona.edu
e-mail: swinteck@email.arizona.edu
1Corresponding author.
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Krishna Muralidharan,
Krishna Muralidharan
Assistant Professor
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Pierre A. Deymier
Pierre A. Deymier
Professor
Department of Materials Science and Engineering,
Department of Materials Science and Engineering,
University of Arizona
,Tucson, AZ 85721
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Nichlas Z. Swinteck
Postdoctoral Research Associate
e-mail: swinteck@email.arizona.edu
e-mail: swinteck@email.arizona.edu
Krishna Muralidharan
Assistant Professor
Pierre A. Deymier
Professor
Department of Materials Science and Engineering,
Department of Materials Science and Engineering,
University of Arizona
,Tucson, AZ 85721
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received April 29, 2012; final manuscript received October 22, 2013; published online June 6, 2013. Assoc. Editor: Michael Leamy.
J. Vib. Acoust. Aug 2013, 135(4): 041016 (13 pages)
Published Online: June 6, 2013
Article history
Received:
April 29, 2012
Revision Received:
October 22, 2013
Citation
Swinteck, N. Z., Muralidharan, K., and Deymier, P. A. (June 6, 2013). "Phonon Scattering in One-Dimensional Anharmonic Crystals and Superlattices: Analytical and Numerical Study." ASME. J. Vib. Acoust. August 2013; 135(4): 041016. https://doi.org/10.1115/1.4023824
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