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Phonon wave-packet dynamics at semiconductor interfaces by molecular-dynamics simulation
Abstract
We directly observe phonon wave packets of well-defined frequency and polarization scattering at a coherent semiconductor interface using molecular-dynamics simulations. We find that in the low-frequency limit the transmission coefficients of both longitudinal and transverse acoustic phonons agree well with those predicted by the continuum-level based acoustic mismatch model. However, the transmission coefficients rapidly decrease close to the cutoff frequency, a result that can be understood within a simple one-dimensional discrete atomic-chain model. We also find that the transmission coefficient for transverse acoustic phonons depends strongly on the relative orientation of the polarization and the Si–Si bonds in the diamond lattice structure.
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Cited by
Cahill, D. G., Ford, W. K., Goodson, K. E., Mahan, G. D., Majumdar, A., Maris, H. J., Merlin, R., & Phillpot, S. R. (2003) · Journal of Applied Physics · doi:10.1063/1.1524305 · Cited by 2,825
Self-citationNanoscale thermal transport. II. 2003–2012
Cahill, D. G., Braun, P. V., Chen, G., Clarke, D. R., Fan, S., Goodson, K. E., Keblinski, P., King, W. P., Mahan, G. D., Majumdar, A., et al. (2014) · Applied Physics Reviews · doi:10.1063/1.4832615 · Cited by 1,763
Self-citationPhonon Transport in Molecular Dynamics Simulations: Formulation and Thermal Conductivity Prediction
McGaughey, A. J. H., & Kaviany, M. (2006) · Advances in Heat Transfer · doi:10.1016/s0065-2717(06)39002-8 · Cited by 273
Metadata
- Authors
- Schelling, P. K., Phillpot, S. R., & Keblinski, P.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2002-04-08
- Volume
- 80
- Issue
- 14
- Pages
- 2484-2486
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2048478839
- Cited by
- 335
- References
- 0
- FWCI
- 3.28
- Type
- journal article
- Language
- en
- Open access
- closed
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- Schelling, P. K., Phillpot, S. R., & Keblinski, P. (2002). Phonon wave-packet dynamics at semiconductor interfaces by molecular-dynamics simulation. Applied Physics Letters. https://doi.org/10.1063/1.1465106
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