Localized Surface Plasmon Resonance in Metamaterials Composed of As1- zSbz Semimetal Nanoparticles in AlxGa1- xAs1- ySby Semiconductor Matrix

Nanomaterials (Basel). 2023 Apr 13;13(8):1355. doi: 10.3390/nano13081355.

Abstract

We analyze the possibility to realize a localized surface plasmon resonance in metamaterials composed of As1-zSbz nanoparticles embedded in an AlxGa1-xAs1-ySby semiconductor matrix. To this end, we perform ab initio calculations of the dielectric function of the As1-zSbz materials. Changing the chemical composition z, we trace the evolution of the band structure, dielectric function, and loss function. In terms of the Mie theory, we calculate the polarizability and optical extinction of a system of As1-zSbz nanoparticles in an AlxGa1-xAs1-ySby environment. We show a possibility to provide localized surface plasmon resonance near the band gap of the AlxGa1-xAs1-ySby semiconductor matrix by a built-in system of As1-zSbz nanoparticles strongly enriched by Sb. The results of our calculations are supported by available experimental data.

Keywords: dielectric function; metal–semiconductor metamaterials; nanoparticles; optical absorption; plasmon resonance.

Grants and funding

V.M.S. acknowledges financial support provided by Grant No. PID2019-105488GB-I00 funded by MCIN/AEI/10.13039/501100011033/. V.I.U. and V.V.C. acknowledge the financial support provided by the Russian Science Foundation, project No. 22-22-20105, https://rscf.ru/project/22-22-20105/ (accessed on 10 April 2023), and by a grant of the St. Petersburg Science Foundation, according to agreement No. 25/2022 as of 14 April 2022. S.V.E. acknowledges financial support provided by the government research assignment for ISPMS SB RAS (Project FWRW-2022-0001).