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Emission of ballistic acoustic phonons by quantum edge states
| Content Provider | Scilit |
|---|---|
| Author | Badalian, S. M. |
| Copyright Year | 1995 |
| Description | Journal: Journal of Physics: Condensed Matter Emission of ballistic acoustic phonons by quantum edge states of one spatial quantization subband has been studied in a two-dimensional electron gas formed at the GaAs/AlGaAs heteroface. The phonon emission due to the deformation and piezoelectric interactions are considered. An analytic expression for the emission intensity distribution in phonon momenta has been derived. Detailed analysis of the intensity distribution is made in low- and high-temperature regimes. Different positions of the Fermi level are considered. It is shown that at low temperatures the phonon emission is predominantly concentrated within a narrow cone around the direction of the edge state propagation, while at high temperatures it is around the magnetic field normal to the electron plane. The emission intensity decreases when the Fermi level falls. This diminution is exponential at low temperatures. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-8984/7/20/012/pdf |
| Ending Page | 3936 |
| Page Count | 8 |
| Starting Page | 3929 |
| ISSN | 09538984 |
| e-ISSN | 1361648X |
| DOI | 10.1088/0953-8984/7/20/012 |
| Journal | Journal of Physics: Condensed Matter |
| Issue Number | 20 |
| Volume Number | 7 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1995-05-15 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Condensed Matter Condensed Matter Physics Magnetic Field Two Dimensional Electron Gas |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
