We investigate the transport properties in nodal-line Weyl semimetal resonant tunneling junction. Double reflections and double transmissions appear, which are specular reflection, retroreflection, normal transmission, and specular transmission. The incident angle dependence transmissions and reflections are studied with different incident energies and different quantum well widths. The retroreflection and the specular transmission appear only when the incident angle of the electron θ is less than the critical value θc. As the incident energy approximately equals the z component of the momentum, double transmissions disappear completely, perfect retroreflection (specular reflection) can be found when θ is smaller (bigger) than θc. Under certain conditions, the transmission and reflection types and their magnitudes can be controlled. For the different cases that the nodal line of the Weyl semimetal is parallel to and perpendicular to the interface, the conductance spectra exhibit strong anisotropy. These physical phenomena help us to design nodal-line Weyl semimetal-based nanodevices.

中文翻译：

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节点线外尔半金属谐振隧道结中的镜面传输

我们研究了节点线 Weyl 半金属谐振隧道结中的传输特性。出现双反射和双透射，分别是镜面反射、回射、法向透射和镜面透射。研究了不同入射能量和不同量子阱宽度的入射角相关传输和反射。只有当电子的入射角 θ 小于临界值 θc 时才会出现回射和镜面透射。由于入射能量大约等于动量的 z 分量，双透射完全消失，当 θ 小于（大于）θc 时，可以找到完美的回射（镜面反射）。在某些条件下，可以控制透射和反射类型及其幅度。对于外尔半金属的节点线平行和垂直于界面的不同情况，电导谱表现出强烈的各向异性。这些物理现象有助于我们设计基于节点线 Weyl 半金属的纳米器件。