Publication Date:
2013-02-27
Description:
Author(s): J. Cuffe, O. Ristow, E. Chávez, A. Shchepetov, P-O. Chapuis, F. Alzina, M. Hettich, M. Prunnila, J. Ahopelto, T. Dekorsy, and C. M. Sotomayor Torres We study the relaxation of coherent acoustic phonon modes with frequencies up to 500 GHz in ultrathin free-standing silicon membranes. Using an ultrafast pump-probe technique of asynchronous optical sampling, we observe that the decay time of the first-order dilatational mode decreases significantly... [Phys. Rev. Lett. 110, 095503] Published Tue Feb 26, 2013
Keywords:
Condensed Matter: Structure, etc.
Print ISSN:
0031-9007
Electronic ISSN:
1079-7114
Topics:
Physics
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