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

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.