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Exciton–Phonon Interaction in the Spherical Nanoheterosystem CdS/β‐HgS/H 2 O
Author(s) -
Tkach M.,
Holovatsky V.,
Voitsekhivska O.,
Mikhalyova M.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199710)203:2<373::aid-pssb373>3.0.co;2-s
Subject(s) - exciton , phonon , hamiltonian (control theory) , condensed matter physics , dielectric , physics , effective mass (spring–mass system) , quantization (signal processing) , second quantization , reduced mass , quantum mechanics , quantum , mathematics , mathematical optimization , algorithm , creation and annihilation operators
The theoretical investigation of the electron, hole and phonon spectra in the spherical nanoheterosystem CdS/β‐HgS/H 2 O is performed within the effective mass approximation in the dielectric continuum model. The Hamiltonian of the exciton–phonon system is established in the representation of second quantization. The energy of the exciton basic state ( E ex ) renormalized due to the interaction with phonons is obtained. The existence of a crook in the E ex curve depending on the β‐HgS shell thickness is proved and explained. A satisfactory correlation between the theoretical and experimental results is obtained.