Specular transmission in nodal-line Weyl semimetal resonant tunneling junction
Specular transmission in nodal-line Weyl semimetal resonant tunneling junction
复制标题
节点线 Weyl 半金属谐振隧道结中的镜面透射
DOI：
10.1063/5.0028269
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发表时间：
2020-11
期刊：
影响因子：
--
通讯作者：
李玉现
中科院分区：
文献类型：
--
作者：
李玉现
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.
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