Formation of nonreciprocal bands in magnetized diatomic plasmonic chains

C. W. Ling; Jin Wang; Kin Hung Fung

doi:10.1103/PhysRevB.92.165430

Formation of nonreciprocal bands in magnetized diatomic plasmonic chains

C. W. Ling, Jin Wang, Kin Hung Fung (Corresponding Author)

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

We show that nonreciprocal bands can be formed in a magnetized periodic chain of spherical plasmonic particles with two particles per unit cell. Simplified forms of symmetry operators in dipole approximations are used to demonstrate explicitly the relation between spectral nonreciprocity and broken spatial-temporal symmetries. Due to hybridization among plasmon modes and free-photon modes, strong spectral nonreciprocity appears in the region slightly below the light line, where highly directed guiding of energy can be supported. The results may provide clear guidance on the design of one-way waveguides.

Original language	English
Article number	165430
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.92.165430
Publication status	Published - 26 Oct 2015

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.92.165430

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abstract = "We show that nonreciprocal bands can be formed in a magnetized periodic chain of spherical plasmonic particles with two particles per unit cell. Simplified forms of symmetry operators in dipole approximations are used to demonstrate explicitly the relation between spectral nonreciprocity and broken spatial-temporal symmetries. Due to hybridization among plasmon modes and free-photon modes, strong spectral nonreciprocity appears in the region slightly below the light line, where highly directed guiding of energy can be supported. The results may provide clear guidance on the design of one-way waveguides.",

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AB - We show that nonreciprocal bands can be formed in a magnetized periodic chain of spherical plasmonic particles with two particles per unit cell. Simplified forms of symmetry operators in dipole approximations are used to demonstrate explicitly the relation between spectral nonreciprocity and broken spatial-temporal symmetries. Due to hybridization among plasmon modes and free-photon modes, strong spectral nonreciprocity appears in the region slightly below the light line, where highly directed guiding of energy can be supported. The results may provide clear guidance on the design of one-way waveguides.

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Formation of nonreciprocal bands in magnetized diatomic plasmonic chains

Abstract

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