Surface optical phonon-assisted electron Raman scattering in a semiconductor quantum disc
Liu Cui-Hong (刘翠红)ab, Ma Ben-Kun (马本堃)a, Chen Chuan-Yu (陈传誉)b
a Department of Physics and Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, Guihuagang Campus, Guangzhou University, Guangzhou 510405, China
Abstract We have carried out a theoretical calculation of the differential cross section for the electron Raman scattering process associated with the surface optical phonon modes in a semiconductor quantum disc. Electron states are considered to be confined within a quantum disc with infinite potential barriers. The optical phonon modes we have adopted are the slab phonon modes by taking into consideration the Fr?hlich interaction between an electron and a phonon. The selection rules for the Raman process are given. Numerical results and a discussion are also presented for various radii and thicknesses of the disc, and different incident radiation energies.
Received: 19 September 2001
Revised: 25 March 2002
Accepted manuscript online:
(Surface states, band structure, electron density of states)
Fund: Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No 980378)
Cite this article:
Liu Cui-Hong (刘翠红), Ma Ben-Kun (马本堃), Chen Chuan-Yu (陈传誉) Surface optical phonon-assisted electron Raman scattering in a semiconductor quantum disc 2002 Chinese Physics 11 730
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