Fizika Nizkikh Temperatur: Volume 43, Number 11 (November 2017), p. 1594-1599    ( to contents , go back )

Optical characteristics of the nanoparticle coupled to a quantum molecular aggregate

I.Yu. Ropakova1 and A.A. Zvyagin2,3

1Institute for Scintillation Materials, STC “Institute for Single Crystals” of the National Academy of Sciences of Ukraine 60 Nauky Ave., Kharkov 61001, Ukraine

2Max-Planck-Institut für Physik komplexer Systeme, 38 Nöthnitzer Str., Dresden D-01187, Germany

3B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
E-mail: ropakova@isma.kharkov.ua

Received April 18, 2017

Abstract

Optical characteristics of a single nanoparticle, coupled to the one-dimensional quantum molecular aggregate is studied. Depending on the values of the coupling of the particle and its own frequency, with respect to the own frequency of the aggregated molecules, and the strength of the aggregation, the dynamical relative permittivity of the nanoparticle manifests the contribution from the exciton band, or/and the ones from the local level(s) caused by the particle. The refractive index and the extinction coefficient of the nanoparticle is also calculated.

PACS: 78.67.Sc Nanoaggregates; nanocomposites;
PACS: 71.35.Aa Frenkel excitons and self-trapped excitons.

Key words: J-aggregates, Frenkel excitons, permittivity, refractive index.

Published online: September 25, 2017

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