Impact of nonlocal response on metallodielectric multilayers and optical patch antennas

Journal Article (Journal Article)

We analyze the impact of nonlocality on the waveguide modes of metallodielectric multilayers and optical patch antennas, the latter formed from metal strips closely spaced above a metallic plane. We model both the nonlocal effects associated with the conduction electrons of the metal and the previously overlooked response of bound electrons. We show that the fundamental mode of a metal-dielectric-metal waveguide, sometimes called the gap plasmon, is very sensitive to nonlocality when the insulating, dielectric layers are thinner than 5 nm. We suggest that optical patch antennas, which can easily be fabricated with controlled dielectric spacer layers and can be interrogated using far-field scattering, can enable the measurement of nonlocality in metals with good accuracy. © 2013 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Moreau, A; Ciracì, C; Smith, DR

Published Date

  • January 2, 2013

Published In

Volume / Issue

  • 87 / 4

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.87.045401

Citation Source

  • Scopus