论文标题
表面等离激元偏振子中的Weyl半含量
Surface plasmon polaritons in strained Weyl semimetals
论文作者
论文摘要
研究了表面等离子体极性子在韦基半含量的紧张平板中，并研究了分裂的时间反转对称性。发现应变诱导的轴向表场可降低这些集体模式的频率，以使波矢量的中间值。根据动量空间中Weyl节点分离的相对取向，表面正常和繁殖方向，即使在薄板中，表面等离子体极化子的分散关系也可能是非偏置的。另外，应变诱导的轴向仪场可以显着影响集体模式的定位特性。这些效果可以原位控制Weyl半法中表面等离子体偏振子的繁殖，并且可能有助于创建非邻次设备。
Surface plasmon polaritons in a strained slab of a Weyl semimetal with broken time-reversal symmetry are investigated. It is found that the strain-induced axial gauge field reduces frequencies of these collective modes for intermediate values of the wave vector. Depending on the relative orientation of the separation of Weyl nodes in momentum space, the surface normal, and the direction of propagation, the dispersion relation of surface plasmon polaritons could be nonreciprocal even in a thin slab. In addition, strain-induced axial gauge fields can significantly affect the localization properties of the collective modes. These effects allow for an in situ control of the propagation of surface plasmon polaritons in Weyl semimetals and might be useful for creating nonreciprocal devices.
