Spectroscopy of condensed matter

Polariton excitations dispersion in atomic cryocrystals in the quadrupole frequency vicinity of the allowed exciton resonance

V. V. Rumyantsev

Galkin Donetsk Institute for Physics and Engineering, Donetsk

Abstract: The paper is devoted to the propagation of exciton-polariton excitations in atomic cryocrystals in the frequency vicinity of a quadrupole resolved exciton resonance. The structure of the local electromagnetic field in a molecular crystal in the frequency vicinity of an isolated quadrupole transition in the spectrum of the molecule is investigated; the tensor of the quadrupole polarizability of the unit volume of a cubic crystal is obtained. The features of the exciton polaritons dispersion reflecting the presence of additional light waves in the investigated frequency neighborhood are studied.

Keywords: exciton polaritons dispersion, quadrupole transition in the spectrum of a molecule, additional light waves.

Received: 09.12.2021
Revised: 13.07.2022
Accepted: 13.07.2022

DOI: 10.21883/OS.2022.09.53298.3017-22

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