We have theoretically investigated surface magnetoplasmons (SMPs) in a waveguide consisting of a uniaxial $\mu$-near-zero (UMNZ) material slab sandwiched between two ferrite materials with opposite remanences. It is shown that this waveguide can support robust unidirectional SMP (USMP), whose electric field extends almost uniformly in the UMNZ layer, hence USMP can acquire modal sizes far larger than the wavelength. We have demonstrated that such large-area USMP (LUSMP) provides many degrees of freedom to manipulate waves. Using LUSMP, waves can be completely trapped with hot spots of wavelength size.

中文翻译：

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使用单轴μ-近零材料的大面积单向表面磁等离子体

我们从理论上研究了波导中的表面磁等离子体(SMP)，该波导由夹在两个具有相反剩磁的铁氧体材料之间的单轴$\mu$ -近零 (UMNZ) 材料板组成。结果表明，该波导可以支持稳健的单向 SMP (USMP)，其电场在 UMNZ 层中几乎均匀地延伸，因此 USMP 可以获得远大于波长的模态尺寸。我们已经证明，这种大面积的 USMP (LUSMP) 提供了许多操纵波浪的自由度。使用 LUSMP，可以用波长大小的热点完全捕获波。