In this work, we propose and demonstrate that transverse Kerker scattering (TKS), previously achieved relying on simultaneous excitation of electric dipole (ED), magnetic dipole (MD), electric and magnetic quadrupoles, can also be simply realized via only two nondegenerate EDs in two-dimensional cylindrical structures. The principle indicates that, the TKS can be achieved as if two EDs oscillate antiphase with similar magnitude despite of the same nature. The proof-of-concept demonstrations are presented using core-shell structures composed of dielectric material and Weyl semimetal that possesses largely intrinsic nonreciprocity without any external stimulus. Furthermore, we generalize the TKS behavior to arbitrary directions (i.e. ${\varphi }_0$ and ${\varphi }_0+\pi$) with a rotated dipole obtained via phase modulation. By adding an extra MD to meet the fundamental Kerker condition, it is achievable to steer the beam at a specific angle of ${\varphi }_0\pm \pi /2$. The steering angle can be tailored in a wide range (i.e. $-{74}^{\circ }\sim 0^{\circ }$) via changing either optical index of dielectric or core’s filling ratio. In addition, the proposed steering property also shows temperature-dependent performance. The present work provides totally new mechanisms to realize TKS and novel TKS-based functions, i.e. arbitrary scattering elimination and beam steering, and it will also stimulate advanced researches on nonreciprocal multipole excitation and interference associated with newly Weyl semimetal with intrinsic magneto-optical response.

在这项工作中，我们提出并证明，先前依靠电偶极子（ED），磁偶极子（MD），电和磁四极子的同时激发而实现的横向Kerker散射（TKS）也可以仅通过两个非简并ED来简单实现在二维圆柱结构中。该原理表明，尽管具有相同的性质，但是可以实现如同两个ED振荡幅度相似的TKS一样的TKS。使用由介电材料和Weyl半金属组成的核壳结构进行概念验证演示，该核壳结构具有很大的内在互惠性，没有任何外部刺激。此外，我们将TKS行为概括为任意方向（即${\varphi }_0$ 和 ${\varphi }_0+\pi$）和通过相位调制获得的旋转偶极子。通过增加额外的MD以满足基本的Kerker条件，可以将光束转向特定的角度${\varphi }_0\pm \pi /2$。转向角可以在很大范围内进行调整（即$-{74}^{\circ }〜0^{\circ }$），方法是更改​​电介质的光学指数或纤芯的填充率。此外，建议的转向性能还显示出与温度有关的性能。目前的工作提供了全新的机制来实现TKS和基于TKS的新颖功能，即任意散射消除和束转向，并且还将激发对不可逆多极激发和与具有固有磁光响应的新型Weyl半金属相关的干涉的高级研究。