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

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

電機工程學系

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
卷	49
發行號	1
出版狀態	已出版 - 2月 2011

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abstract = "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.",

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T1 - Roles of dislocation density to the scattering of nano-acoustic waves in GaN

AU - Liu, Tzu Ming

AU - Sun, Shih Ze

AU - Chang, Chieh Feng

AU - Chen, Guan Ting

AU - Pan, Chang Chi

AU - Chyi, Jen Inn

AU - Sun, Chi Kuang

PY - 2011/2

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N2 - 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.

AB - 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.

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M3 - 期刊論文

AN - SCOPUS:79953311143

VL - 49

SP - 171

EP - 175

JO - Chinese Journal of Physics

JF - Chinese Journal of Physics

SN - 0577-9073

IS - 1

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

摘要

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