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http://hdl.handle.net/123456789/6113| Title: | Amplification of acoustic waves due to an external temperature gradient in super lattices |
| Authors: | Mensah, S Y Kangah, G K |
| Issue Date: | 1991 |
| Publisher: | University of Cape Coast |
| Abstract: | Amplification of short-wave sound propagating along the axis of a semiconductor super lattice by electrons of the lowest mini band in an external temperature gradient is investigated theoretically. The mechanism of absorption of phonons is due to Landau damping. Unlike a homogeneous material, the threshold field at which absorption turns over to amplification depends on the super lattice parameters and the wavelength of the sound wave |
| Description: | 4p:, ill. |
| URI: | http://hdl.handle.net/123456789/6113 |
| ISSN: | 23105496 |
| Appears in Collections: | Department of Physics |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Amplification of acoustic waves due to an external.pdf | Article | 513.01 kB | Adobe PDF | View/Open |
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