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.
Surface Physics Laboratory and Research Center of Theoretical Physics, Fudan University, Shanghai 200433, China.
Zheng
Z
Liu
Zhifang
Z
Lin
S T
ST
Chui