Raman scattering in a two-dimensional electron gas: Boltzmann equation approach
| dc.creator | Mishchenko, E. G. | |
| dc.date | 1999-03-10 | |
| dc.date.accessioned | 2026-07-25T23:47:27Z | |
| dc.description | The inelastic light scattering in a 2-d electron gas is studied theoretically using the Boltzmann equation techniques. Electron-hole excitations produce the Raman spectrum essentially different from the one predicted for the 3-d case. In the clean limit it has the form of a strong non-symmetric resonance due to the square root singularity at the electron-hole frequency $ω= vk$ while in the opposite dirty limit the usual Lorentzian shape of the cross section is reestablished. The effects of electromagnetic field are considered self-consistently and the contribution from collective plasmon modes is found. It is shown that unlike 3-d metals where plasmon excitations are unobservable (because of very large required transfered frequencies), the two-dimensional electron system gives rise to a low-frequency ($ω\propto k^{1/2}$) plasmon peak. A measurement of the width of this peak can provide data on the magnitude of the electron scattering rate. | |
| dc.description | 4 pages, 3 figures. to appear in Phys. Rev. B 59 (1999) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9903165 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9903165 | |
| dc.identifier | Phys. Rev. B 59, 14892 (1999). | |
| dc.identifier | doi:10.1103/PhysRevB.59.14892 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/101441 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | Raman scattering in a two-dimensional electron gas: Boltzmann equation approach | |
| dc.type | text |