Optical and transport properties of spheroidal metal nanoparticles with account for the surface effect

Abstract

The kinetic approach is applied to develop the Drude-Sommerfeld model for studying of the optical and electrical transport properties of spheroidal metallic nanoparticles, when the free electron path is much greater than the particle size. For the nanoparticles of an oblate or a prolate spheroidal shape there has been found the dependence of the dielectric function and the electric conductivity on a number of factors, including the frequency, the particle radius, the spheroidal aspect ratio and the orientation of the electric field with respect to the particle axes. The oscillations of the real and imaginary parts of the dielectric permeability have been found with increasing of particle size at some fixed frequencies or with frequency increasing at some fixed radius of a nanoparticle. The results obtained in kinetic approach are compared with the known from the classical model.

15 pages, 9 figures; submit/0282833

References in corpus (3)

• Observation of intrinsic size effects in the optical response of individual gold nanoparticles
• Lifetime of the first and second collective excitations in metallic nanoparticles
• Theory for absorption of ultrashort laser pulses by spheroidal metallic nanoparticles

Cited by in corpus (6)

• Temperature effects on the surface plasmon resonance in copper nanoparticles
• Radiative damping of surface plasmon resonance in spheroidal metallic nanoparticle embedded in a dielectric medium
• Resonance Plasmon Linewidth Oscillations in Spheroidal Metallic Nanoparticle Embedded in a Dielectric Matrix
• Temperature dependence of plasmon resonances in spheroidal metal nanoparticles
• Nonlocal effects in metallic nanoparticles: the kinetic approach outlook
• Plasmonic effects in rod-like metal-dielectric nanoparticles