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Title: Plasmonic Roche lobe in metal-dielectric-metal structure

This study investigates a plasmonic Roche lobe that is based on a metal-dielectric-metal (MDM) structure using finite-difference time-domain simulations and theoretical analyses. The effective refractive index of the MDM structure has two centers and is inversely proportional to the distance from the position of interest to the centers, in a manner that is analogous to the gravitational potential in a two-star system. The motion of surface plasmons (SPs) strongly depends on the ratio of permittivities at the two centers. The Lagrange point is an unstable equilibrium point for SPs that propagate in the system. After the SPs have passed through the Lagrange point, their spread drastically increases.
Authors:
;  [1]
  1. Department of Photonics, National Cheng Kung University, Tainan, 701, Taiwan (China)
Publication Date:
OSTI Identifier:
22227917
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; DIELECTRIC MATERIALS; EQUILIBRIUM; GRAVITATION; HETEROJUNCTIONS; METALS; PERMITTIVITY; PLASMONS; REFRACTIVE INDEX; ROCHE EQUIPOTENTIALS; SURFACES