Open AccessDispersion of Electromagnetic Excitations in a Non-Ideal Microporous Lattice
Author(s) -
Rumyantsev Vv
Publication year - 2021
Publication title -
physical science and biophysics journal
Language(s) - English
Resource type - Journals
ISSN - 2641-9165
DOI - 10.23880/psbj-16000182
Subject(s) - polariton , lattice (music) , condensed matter physics , dispersion relation , microporous material , dispersion (optics) , physics , materials science , quantum mechanics , acoustics , composite material
We develop a numerical model for a defect-containing 2D lattice of microporous lattice with embedded ultracold atomic clusters (quantum dots). It is assumed that certain fractions of quantum dots and micropores are absent, which leads to transformation of polariton spectrum of the structure. The dispersion relations for polaritonic modes are derived as functions of defect concentrations and on this basis the band gap as well as the effective masses of lower and upper dispersion branch polaritons.