Active nanophotonics can be realized by controlling the optical properties of materials with external magnetic fields. Here, we explore the influence of optical anisotropy on the magneto-optical activity in nonmagnetic hyperbolic nanoparticles. We demonstrate that the magneto-optical response is driven by the hyperbolic dispersion via the coupling of metallic-induced electric and dielectric-induced magnetic dipolar optical modes with static magnetic fields. Magnetic circular dichroism experiments confirm the theoretical predictions and reveal tunable magneto-optical activity across the visible and near infrared spectral range.

中文翻译：

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非磁性双曲纳米粒子的磁光活性

主动纳米光子学可以通过利用外部磁场控制材料的光学特性来实现。在这里，我们探讨了光学各向异性对非磁性双曲纳米粒子磁光活性的影响。我们证明了磁光响应是由双曲线色散驱动的，通过金属诱导的电和介电诱导的磁偶极光学模式与静磁场的耦合。磁性圆二色性实验证实了理论预测，并揭示了可见光和近红外光谱范围内的可调磁光活动。