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Type: Artigo de periódico
Title: Photonic band structure evolution of a honeycomb lattice in the presence of an external magnetic field
Author: Duque, CA
Porras-Montenegro, N
Cavalcanti, SB
Oliveira, LE
Abstract: A standard plane-wave expansion technique is used to investigate the evolution of the photonic band structure of a two-dimensional honeycomb lattice composed by cylindrical shell rods with dielectric permittivities epsilon(1) and epsilon(2), and embedded in a background with permittivity epsilon(3). We have considered the effect of dispersive dielectric responses as well as the influence of an externally applied magnetic field aiming to obtain efficient tunable bandgaps. Present results suggest that a combination of a doped semiconductor constituent with an anisotropic geometry, which breaks symmetry and unfolds degeneracies, provides an efficient realization of photonic systems with tunable bandgaps.
Subject: dielectric function
doping profiles
energy gap
gallium arsenide
III-V semiconductors
nanostructured materials
photonic crystals
semiconductor doping
Country: EUA
Editor: Amer Inst Physics
Citation: Journal Of Applied Physics. Amer Inst Physics, v. 105, n. 3, 2009.
Rights: aberto
Identifier DOI: 10.1063/1.3072668
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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