Substrate effects on the optical properties of spheroidal nanoparticles

C. E. Román-Velázquez; Cecilia Noguez; R. G. Barrera

doi:10.1103/PhysRevB.61.10427

Substrate effects on the optical properties of spheroidal nanoparticles

C. E. Román-Velázquez, Cecilia Noguez, and R. G. Barrera

Phys. Rev. B 61, 10427 – Published 15 April 2000

Abstract

We developed a spectral formalism to study the effective polarizability of a spheroidal particle lying over a substrate, including multipolar effects. With the help of the spectral representation, we can discuss the optical response in terms of the excitation of the multipolar modes of the system. As an example of applications, we provide a spectral representation of the differential-reflectance spectra and we perform calculations for specific systems.

Received 28 May 1999

DOI:https://doi.org/10.1103/PhysRevB.61.10427

Authors & Affiliations

C. E. Román-Velázquez

Centro de Investigación Científica y de Educación Superior de Ensenada, Kilómetro 107 carretera Tijuana a Ensenada, Ensenada Baja, California México

Cecilia Noguez^* and R. G. Barrera

Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, México Distrito Federal 01000, México

^*Author to whom all correspondence should be addressed. Electronic address: cecilia@fenix.ifisicacu.unam.mx

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Vol. 61, Iss. 15 — 15 April 2000

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Physical Review B

covering condensed matter and materials physics