作者: Mark S. Wheeler , J. Stewart Aitchison , Mohammad Mojahedi
DOI: 10.1103/PHYSREVB.72.193103
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摘要: A negative effective permeability is shown to exist at infrared frequencies in a three-dimensional collection of polaritonic spheres. This demonstrated by an medium theory which relates the Mie resonances constituent spheres bulk response composite. The derived permittivity and are be isotropic. results verified comparison with multiple-scattering photonic band calculations. existence anomalous dispersion region group velocity appropriate signs associated imaginary parts also discussed.