Coherent magnetic plasmon modes in a contacting gold nano-sphere chain on a gold Slab
K. N. Chen, H. Liu, S. M. Wang, Y. J. Zheng, C. Zhu, Y. Wang, S. N., Zhu
TL;DR
This paper proposes and analyzes a gold nanosphere chain on a gold slab that supports broadband coherent magnetic plasmon modes, with potential applications in subwavelength slow wave waveguides.
Contribution
It introduces a novel coupled magnetic resonator waveguide structure and investigates its dispersion properties using Lagrangian and Fourier methods.
Findings
Supports broadband coherent magnetic plasmon modes
Exhibits small group velocity suitable for slow wave applications
Provides insights into dispersion characteristics of the nanostructure
Abstract
A coupled magnetic resonator waveguide, composed of a contacting gold nanosphere chain on a gold slab, is proposed and investigated. A broadband coherent magnetic plasmon mode can be excited in this one dimensional nanostructure. By employing the Lagrangian formalism and the Fourier transform method, the dispersion properties of the wave vector and group velocity of the magnetic plasmon mode are investigated. Small group velocity can be obtained from this system which can be applied as subwavelength slow wave waveguides.
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