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Title: Photonic states mixing beyond the plasmon hybridization model

Abstract

A study is performed on a photonic-state mixing-pattern in an insulator-metal-insulator cylindrical silver nanoshell and its rich variations induced by changes in the geometry and dielectric media of the system, representing the combined influences of plasmon coupling strength and cavity effects. This study is performed in terms of the photonic local density of states (LDOS) calculated using the Green tensor method, in order to elucidate those combined effects. The energy profiles of LDOS inside the dielectric core are shown to exhibit consistently growing number of redshifted photonic states due to an enhanced plasmon coupling induced state mixing arising from decreased shell thickness, increased cavity size effect, and larger symmetry breaking effect induced by increased permittivity difference between the core and the background media. Further, an increase in cavity size leads to increased additional peaks that spread out toward the lower energy regime. A systematic analysis of those variations for a silver nanoshell with a fixed inner radius in vacuum background reveals a certain pattern of those growing number of redshifted states with an analytic expression for the corresponding energy downshifts, signifying a photonic state mixing scheme beyond the commonly adopted plasmon hybridization scheme. Finally, a remarkable correlation is demonstrated betweenmore » the LDOS energy profiles outside the shell and the corresponding scattering efficiencies.« less

Authors:
; ;  [1]
  1. Physics of Magnetism and Photonics Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)
Publication Date:
OSTI Identifier:
22597773
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 4; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COUPLING; CRYSTAL DEFECTS; CYLINDRICAL CONFIGURATION; DENSITY OF STATES; DIELECTRIC MATERIALS; HYBRIDIZATION; MIXING; PERMITTIVITY; PLASMONS; RED SHIFT; SILVER; SYMMETRY BREAKING

Citation Formats

Suryadharma, Radius N. S., Iskandar, Alexander A., E-mail: iskandar@fi.itb.ac.id, and Tjia, May-On. Photonic states mixing beyond the plasmon hybridization model. United States: N. p., 2016. Web. doi:10.1063/1.4959258.
Suryadharma, Radius N. S., Iskandar, Alexander A., E-mail: iskandar@fi.itb.ac.id, & Tjia, May-On. Photonic states mixing beyond the plasmon hybridization model. United States. doi:10.1063/1.4959258.
Suryadharma, Radius N. S., Iskandar, Alexander A., E-mail: iskandar@fi.itb.ac.id, and Tjia, May-On. 2016. "Photonic states mixing beyond the plasmon hybridization model". United States. doi:10.1063/1.4959258.
@article{osti_22597773,
title = {Photonic states mixing beyond the plasmon hybridization model},
author = {Suryadharma, Radius N. S. and Iskandar, Alexander A., E-mail: iskandar@fi.itb.ac.id and Tjia, May-On},
abstractNote = {A study is performed on a photonic-state mixing-pattern in an insulator-metal-insulator cylindrical silver nanoshell and its rich variations induced by changes in the geometry and dielectric media of the system, representing the combined influences of plasmon coupling strength and cavity effects. This study is performed in terms of the photonic local density of states (LDOS) calculated using the Green tensor method, in order to elucidate those combined effects. The energy profiles of LDOS inside the dielectric core are shown to exhibit consistently growing number of redshifted photonic states due to an enhanced plasmon coupling induced state mixing arising from decreased shell thickness, increased cavity size effect, and larger symmetry breaking effect induced by increased permittivity difference between the core and the background media. Further, an increase in cavity size leads to increased additional peaks that spread out toward the lower energy regime. A systematic analysis of those variations for a silver nanoshell with a fixed inner radius in vacuum background reveals a certain pattern of those growing number of redshifted states with an analytic expression for the corresponding energy downshifts, signifying a photonic state mixing scheme beyond the commonly adopted plasmon hybridization scheme. Finally, a remarkable correlation is demonstrated between the LDOS energy profiles outside the shell and the corresponding scattering efficiencies.},
doi = {10.1063/1.4959258},
journal = {Journal of Applied Physics},
number = 4,
volume = 120,
place = {United States},
year = 2016,
month = 7
}
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  • In the Standard Model (SM) the photon in radiative {anti B}{sup 0} and {anti B}{sub s} decays is predominantly left-handed. Thus, mixing induced CP asymmetries in b {r_arrow} s{gamma} and b {r_arrow} d{gamma} are suppressed by m{sub s}/m{sub b} and m{sub d}/m{sub b}, respectively, and are very small. In many extensions of the SM, such as the left-right symmetric model (LRSM), SU(2)xU(1) models with exotic fermions and SUSY, the amplitude of right-handed photons grows proportional to the virtual heavy fermion mass, which can lead to large asymmetries. As an example, in the LRSM, asymmetries larger than 50% are possible evenmore » when radiative decay rate measurements agree with SM predictions.« less
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