Indium Antimonide, constraints on practicality as a magneto-optical platform for topological surface plasmon polaritons

相位校正太赫兹反射光谱揭示锑化铟的近零折射率行为

Near-zero-index behavior in indium antimonide revealed by phase-corrected terahertz reflection spectroscopy

本文提出基于Kramers-Kronig关系的太赫兹反射光谱相位校正方法，无需复杂计算即可准确提取复折射率，并据此实验发现未掺杂InSb在1-2 THz呈现近零折射率行为，群速度低至0.08c。

等离子体增强超薄InSb层的红外辐射吸收

Plasmonic enhancement of the infrared radiation absorption in an ultrathin InSb layer

研究提出一种等离子体结构，显著增强超薄InSb层的红外吸收，为高灵敏多色探测器开发提供基础。

A Novel Near-field Photonic Thermal Diode with hBN and InSb

Similar to the diode in electronics, a thermal diode is a two-terminal device that allows heat to transfer easier in one direction (forward bias) than in the opposite direction (reverse bias). Unlike conductive and convective thermal diodes, a photonic thermal diode operates in a contactless mode and may afford a large operating temperature range. In this work, a novel near-field photonic thermal diode with hexagonal boron nitride (hBN) and indium antimonide (InSb) is proposed and theoretically demonstrated. The temperature dependence of the interband absorption of InSb is used to couple (or d…

Three-Dimensional Invisibility to Superscattering Induced by Zeeman-Split Modes

We report that the fundamental three-dimensional (3-D) scattering single-channel limit can be overcome in magneto-optical assisted systems by inducing nondegenerate magnetoplasmonic modes. In addition, we propose a 3-D active (magnetically assisted) forward-superscattering to invisibility switch, functioning at the same operational wavelength. Our structure is composed of a high-index dielectric core coated by indium antimonide (InSb), a semiconductor whose permittivity tensorial elements may be actively manipulated by an external magnetic bias $B_0$. In the absence of $B_0$, InSb exhibits iso…

Tuning Topological Transitions in Twisted Thermophotovoltaic Systems

Twisted bilayer two-dimensional electronic systems give rise to many exotic phenomena and unveil a new frontier for the study of quantum materials. In photonics, twisted two-dimensional systems coupled via near-field interactions offer a platform to study localization and lasing. Here, we propose that twisting can be an unprecedented tool to tune the performance of near-field thermophotovoltaic systems. Remarkably, through twisting-induced photonic topological transitions, we achieve significant tuning of the thermophotovoltaic energy efficiency and power. The underlying mechanism is related t…

Terahertz topological plasmon polaritons for robust temperature sensing

We theoretically investigate the application of topological plasmon polaritons (TPPs) to temperature sensing for the first time. Based on an analogy of the topological edge states in the Su-Schrieffer-Heeger model, TPPs are realized in a one-dimensional intrinsic indium antimonide (InSb) microsphere chain. The existence of TPPs is demonstrated by analyzing the topology of the photonic band structures and the eigenmode distribution. By exploiting the temperature dependence of the permittivity of InSb in the terahertz range, the resonance frequency of the TPPs can be largely tuned by the tempera…