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Anharmonic decay of subterahertz coherent acoustic phonons in GaN
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10.1063/1.2433755
/content/aip/journal/apl/90/4/10.1063/1.2433755
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2433755
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Differential transient transmission trace of the studied sample with MQW at (inset) and its corresponding power spectra during the generation (solid curve) and echo (dotted curve) phases.

Image of FIG. 2.
FIG. 2.

Anharmonic decay time (solid squares) of 470 and (inset) longitudinal coherent acoustic phonons propagating in GaN at different temperatures. Error bars represent the standard deviation of measured values. Described by Eq. (2) (solid curve), the decay time shows an inverse cubic dependence on temperature.

Image of FIG. 3.
FIG. 3.

Conservation surfaces of (solid curve) and (dotted curve) with the origin of the surfaces moved by the wave vector of LA phonons. Point is related to the occasional intersection close to the direction and point is related to the nearly occasional intersection close to the axis.

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/content/aip/journal/apl/90/4/10.1063/1.2433755
2007-01-22
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anharmonic decay of subterahertz coherent acoustic phonons in GaN
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2433755
10.1063/1.2433755
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