Plasmon dynamics in a metal nanoslit

Author

Wuenschell, Jeff ; Kim, Hong Koo

Author_Institution

Univ. of Pittsburgh, Pittsburgh

Volume

1

fYear

2006

fDate

22-25 Oct. 2006

Firstpage

254

Lastpage

255

Abstract

We present an analytical study of the dynamic interplay among surface plasmon polarization charges, electromagnetic fields, and energy flow in the metal/dielectric interface and metal nanoslit structure. Particular attention is given to the regime where the energy flow in the metal side is significant compared to that in the dielectric side. The study reveals that a vortex-like circulation of energy is an intrinsic feature of surface plasmon propagation supported by a metal/dielectric interface, and, in general, a vortex can form when the permittivity and permeability values of the materials involved satisfy the following condition: {(epsiv_m /epsiv_d ) < -1 and (mu_m /mu_d ) > -1} or {(epsiv_m /epsiv_d ) > -1 and (mu_m /mu_d ) < -1}.

Keywords

electromagnetic fields; metals; nanostructured materials; permittivity; surface plasmons; dynamic interplay; electromagnetic fields; energy flow; metal nanoslit; metal-dielectric interface; permeability; permittivity; plasmon dynamics; surface plasmon polarization charges; vortex-like circulation; Attenuation; Dielectric constant; Dielectric losses; Dielectric materials; Dielectric thin films; Electrons; Optical films; Optical surface waves; Optical vortices; Plasmons; metal nanoslits; plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE

Conference_Location

Gyeongju

Print_ISBN

978-1-4244-0541-1

Electronic_ISBN

978-1-4244-0541-1

Type

conf

DOI

10.1109/NMDC.2006.4388858

Filename

4388858