Left-handed materials made of dilute ferromagnetic wire arrays with gyrotropic tensors

Left-handed materials made of dilute ferromagnetic wire arrays with gyrotropic tensors
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由具有回旋张量的稀铁磁线阵列制成的左手材料

DOI:
10.1063/1.2759180
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发表时间:
2007-07
影响因子:
3.2
通讯作者:
--
中科院分区:
物理与天体物理3区
文献类型:
--
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在这篇文章中,我们从理论上研究了垂直入射的微波在具有旋向张量的稀磁金属线阵(DMFWA)平板中的传播特性。发现DMFWA在低于等离子体频率的一个窄的频率范围内可能成为左手材料,即使相应的反演磁导率元的真实的部分为正。与具有相同对角磁导率元的各向同性材料相比,由于旋向性磁导率张量的非对角元素的存在,DMFWA在更高的频率范围内成为LHM依赖于其几何结构。此外,在DMFWA中传播的微波的E、H和波矢量Re(k)形成近似左手三重矢量。
In this article, we theoretically investigate properties of normally incident microwave propagation in dilute metallic ferromagnetic wire array (DMFWA) slabs with gyrotropic tensors. It is found that DMFWA may become left-handed materials (LHM) in a narrow frequency range below the plasma frequency, even the real part of the corresponding inversion permeability element is positive. Comparing with the isotropic materials having same diagonal permeability elements, due to existence of off-diagonal elements of the gyrotropic permeability tensor, the DMFWA becomes a LHM in a higher frequency range depended on its geometric structure. In addition, E, H, and wave vector Re(k) of microwave propagating in the DMFWA form an approximately left-handed triplet of vectors.
由具有面内单轴各向异性的软铁磁薄膜制成的宽带左手材料
DOI: 10.1088/0953-8984/18/27/024
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