Physics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002epjb...27..577z&link_type=abstract
The European Physical Journal B, Volume 27, Issue 4, pp. 577-582 (2002).
Physics
13
Phonons, Polarons And Electron-Phonon Interactions, Phonon-Electron And Phonon-Phonon Interactions
Scientific paper
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.
Chen Chuan-Yu
Xie Hong-Jing
Zhang Lianchang
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