Roles of dislocation density to the scattering of nano-acoustic waves in GaN

Tzu Ming Liu, Shih Ze Sun, Chieh Feng Chang, Guan Ting Chen, Chang Chi Pan, Jen Inn Chyi, Chi Kuang Sun

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

We have investigated how the density of threading dislocations in GaN affects the decay of the intensity of nano-acoustic waves. We carried out measurements using a reection-type femtosecond pump probe, and thus, we determined the local dislocation density from the lifetime of nano-acoustic waves. We found that for a dislocation density of 108 cm-2, defect scattering will surmount other scattering mechanisms and dominate the attenuation of 100GHz acoustic phonons.

原文???core.languages.en_GB???
頁(從 - 到)171-175
頁數5
期刊Chinese Journal of Physics
49
發行號1
出版狀態已出版 - 2月 2011

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