期刊
APPLIED PHYSICS LETTERS
卷 96, 期 26, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3458831
关键词
Brillouin zones; molecular dynamics method; nanostructured materials; phonons; thin films
资金
- Integrated Electronic Engineering Center
- Center for Advanced Microelectronics Manufacturing at Binghamton University
The molecular dynamics based phonon wave-packet technique is used to study phonon transport across mass-mismatched fcc thin films. Transport behavior of normally incident longitudinal acoustic phonon wave packets with wave vectors ranging in magnitude from 2% to 50% of the < 100 > first Brillouin zone boundary is examined as a function of thin film thickness when the phonon mean free path exceeds film thickness. The results indicate that for thin film to bulk solid mass ratios up to a factor of 6, the transmission of energy through the thin film can be well described by treating the thin film as a bulk solid. (C) 2010 American Institute of Physics. [doi:10.1063/1.3458831]
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