Topological Insulator Metamaterials,Chemical Reviews

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Topological Insulator Metamaterials
Chemical Reviews ( IF 51.4 ) Pub Date : 2023-03-21 , DOI: 10.1021/acs.chemrev.2c00594
Harish N S Krishnamoorthy _{1,

2} , Alexander M Dubrovkin _{1,

2} , Giorgio Adamo _{1,

2} , Cesare Soci _{1,

2}

Affiliation

Confinement of electromagnetic fields at the subwavelength scale via metamaterial paradigms is an established method to engineer light–matter interaction in most common material systems, from insulators to semiconductors and from metals to superconductors. In recent years, this approach has been extended to the realm of topological materials, providing a new avenue to access nontrivial features of their electronic band structure. In this review, we survey various topological material classes from a photonics standpoint, including crystal growth and lithographic structuring methods. We discuss how exotic electronic features such as spin-selective Dirac plasmon polaritons in topological insulators or hyperbolic plasmon polaritons in Weyl semimetals may give rise to unconventional magneto-optic, nonlinear, and circular photogalvanic effects in metamaterials across the visible to infrared spectrum. Finally, we dwell on how these effects may be dynamically controlled by applying external perturbations in the form of electric and magnetic fields or ultrafast optical pulses. Through these examples and future perspectives, we argue that topological insulator, semimetal and superconductor metamaterials are unique systems to bridge the missing links between nanophotonic, electronic, and spintronic technologies.

中文翻译：

拓扑绝缘体超材料

通过超材料范例在亚波长范围内限制电磁场是在大多数常见材料系统（从绝缘体到半导体，从金属到超导体）中设计光-物质相互作用的既定方法。近年来，这种方法已扩展到拓扑材料领域，为获取其电子能带结构的重要特征提供了一条新途径。在这篇综述中，我们从光子学的角度调查了各种拓扑材料类别，包括晶体生长和光刻结构方法。我们讨论了奇异的电子特征，例如拓扑绝缘体中的自旋选择性狄拉克等离子体激元或外尔半金属中的双曲等离子体激元如何产生非常规的磁光、非线性、以及在可见光到红外光谱范围内的超材料中的圆形光电效应。最后，我们详细讨论了如何通过施加电场和磁场或超快光脉冲形式的外部扰动来动态控制这些效应。通过这些例子和未来的展望，我们认为拓扑绝缘体、半金属和超导体超材料是弥合纳米光子、电子和自旋电子技术之间缺失环节的独特系统。

更新日期：2023-03-21

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