Excitons in gyrotropic quantum-dot supercrystals

Anvar S. Baimuratov, Alexander I. Shlykov, Weiren Zhu, Mikhail Yu Leonov, Alexander V Baranov, Anatoly V Fedorov, Ivan D. Rukhlenko

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6 Citations (Scopus)

Abstract

We use quantum theory of molecular crystals to study collective excitations (excitons) of gyrotropic quantum-dot (QD) supercrystals with complex lattices consisting of two or more sublattices of semiconductor QDs. We illustrate the potentials of our approach by applying it to analytically calculate the linear permittivity tensor of supercrystals with two QDs per unit cell. The spatial dispersions of exciton energy bands and permittivity tensor components are examined in detail for two-dimensional supercrystals with a square lattice, which are relatively easy to fabricate in practice. Our results provide a systematic and versatile framework for the engineering of dispersion properties of gyrotropic QD supercrystals and for the analysis of their absorption and circular dichroism spectra.

Original languageEnglish
Pages (from-to)2423-2426
Number of pages4
JournalOptics Letters
Volume42
Issue number13
DOIs
Publication statusPublished - 1 Jul 2017

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