Electromagnetic scattering by spherical negative-refractive-index particles: Low-frequency resonance and localization parameters.
The Mie scattering of electromagnetic waves of wave vector k by spherical negative-refractive-index particles of radius a exhibits an unusual resonance at ka-->0. The scattering enhancement from the ka-->0 resonance is insensitive to the size of scatterers, distinct from the Mie scattering resonances from positive-refractive-index particles. For media consisting of a collection of the negative-refractive-index particles, the unusual resonance results in a significant reduction of the localization parameter, providing a possibility to reach the light localization transition by reducing the wave vector k, in analogy to electronic systems.
Liu
Zheng
Z
Surface Physics Laboratory and Research Center of Theoretical Physics, Fudan University, Shanghai 200433, China.
Lin
Zhifang
Z
Chui
S T
ST