Plasmon Resonance in a System of Bi Nanoparticles Embedded into (Al,Ga)As Matrix.

Autor: Ushanov, Vitalii I., Eremeev, Sergey V., Silkin, Vyacheslav M., Chaldyshev, Vladimir V.
Předmět:
Zdroj: Nanomaterials (2079-4991); Jan2024, Vol. 14 Issue 1, p109, 13p
Abstrakt: We reveal the feasibility of the localized surface plasmon resonance in a system of Bi nanoparticles embedded into an Al x Ga 1 − x As semiconductor matrix. With an ab initio determined dielectric function for bismuth and well-known dielectric properties of Al x Ga 1 − x As solid solution, we performed calculations of the optical extinction spectra for such metamaterial using Mie's theory. The calculations demonstrate a strong band of the optical extinction using the localized surface plasmons near a photon energy of 2.5 eV. For the semiconducting matrices with a high aluminum content x > 0.7 , the extinction by plasmonic nanoparticles plays the dominant role in the optical properties of the medium near the resonance photon energy. [ABSTRACT FROM AUTHOR]
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