Ulbrich, R. G. ; Narayanamurti, V. ; Chin, M. A. (1980) Propagation of Large-Wave-Vector acoustic phonons in semiconductors Physical Review Letters, 45 (17). pp. 1432-1435. ISSN 0031-9007
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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.45.143...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.45.1432
Abstract
The spatial and temporal characteristics of phonon pulses generated in the interband energy relaxation process of photoexcited e-h pairs in GaAs and InP are reported. With use of a superconducting Pb tunnel junction as a phonon threshold detector, it is shown that the energy transport occurs via near-zone-edge transverse acoustic phonons and that over lengths of the order of several millimeters the pulse propagation shows all features of ballistic transport in a dispersive medium.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 30658 |
| Deposited On: | 23 Dec 2010 12:54 |
| Last Modified: | 11 Jun 2011 08:21 |
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