Surface and interface optical phonon modes and electron-phonon interaction in a multi-shell spherical system

被引：0
|
作者：
Li Zhang
Hong-Jing Xie
Chuan-Yu Chen
机构：
[1] Department of Physics,
[2] Guihuagang Campus,undefined
[3] Guangzhou University,undefined
[4] Guangzhou 510405,undefined
[5] PR China,undefined
[6] Department of Physics,undefined
[7] Beijing Normal University,undefined
[8] Beijing 100875,undefined
[9] PR China,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2002年 / 27卷
关键词：
PACS. 74.25.Kc Phonons – 71.38.-k Polarons and electron-phonon interactions – 63.20.Kr Phonon-electron and phonon-phonon interactions;
D O I：
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学科分类号：
摘要：
Within the framework of the dielectric continuum model, interface optical(IO) and surface optical(SO) phonon modes and the Fröhlich electron-IO (SO) phonon interaction Hamiltonian in a multi-shell spherical system were derived and studied. Numerical calculation on CdS/HgS/H2O and CdS/HgS/CdS/H2O spherical systems have been performed. Results reveal that there are two IO modes and one SO mode for the CdS/HgS/H2O system, one SO mode and four IO modes whose frequencies approach the IO phonon frequencies of the single CdS/HgS heterostructure with the increasing of the quantum number l for CdS/HgS/CdS/H2O. It also showed that smaller l and SO phonon compared with IO phonon, have more significant contribution to the electron-IO (SO) phonon interaction.
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页码：577 / 582
页数：5
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