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APS » Journals » Phys. Rev. B » Volume 61 » Issue 15
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Phys. Rev. B 61, 10427–10436 (2000)

Substrate effects on the optical properties of spheroidal nanoparticles

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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

Received 28 May 1999; revised 7 September 1999; published in the issue dated 15 April 2000

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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.61.10427
DOI:
10.1103/PhysRevB.61.10427
PACS:
78.20.Bh, 78.66.Vs, 78.66.Sq

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

 
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