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Reduction in coherent phonon lifetime in superlattices
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10.1063/1.2987518
/content/aip/journal/apl/93/11/10.1063/1.2987518
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/11/10.1063/1.2987518

Figures

Image of FIG. 1.
FIG. 1.

[(a), (c), and (e)] Reflectivity change for , , and superlattice at different pump fluences. [(b), (d). and (f)] The corresponding frequency spectrum calculated by FFT. Part of the spectrum curves are magnified ten times to see the mode clearly. All the curves are vertically translated and labeled with the pump fluence.

Image of FIG. 2.
FIG. 2.

Coherent phonon vibration signal for , , and superlattice. The dots are experimental data, and lines are fitted results.

Image of FIG. 3.
FIG. 3.

Scattering rate of mode with different pump fluences. The dots are experimental data, and the lines are fitted results.

Tables

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Table I.

Comparison of phonon frequencies from Raman scattering and pump-probe experiment

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/content/aip/journal/apl/93/11/10.1063/1.2987518
2008-09-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reduction in coherent phonon lifetime in Bi2Te3/Sb2Te3 superlattices
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/11/10.1063/1.2987518
10.1063/1.2987518
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