• Acta Physica Sinica
  • Vol. 69, Issue 15, 154204-1 (2020)
Xiao-Xi Zhou1, Chuan-Deng Hu2,*, Wei-Xin Lu1, Yun Lai3, and Bo Hou1,*
Author Affiliations
  • 1Collaborative Innovation Center of Suzhou Nano Science and Technology, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
  • 2Shenzhen Fantwave Tech. Co., Ltd., Shenzhen 518000, China
  • 3National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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    DOI: 10.7498/aps.69.20200195 Cite this Article
    Xiao-Xi Zhou, Chuan-Deng Hu, Wei-Xin Lu, Yun Lai, Bo Hou. Numerical design of frequency-split Weyl points in Weyl metamaterial[J]. Acta Physica Sinica, 2020, 69(15): 154204-1 Copy Citation Text show less
    (a) Unit cell where the gray surface is a cut plane along z direction; (b)−(d) the process of changing the positions of four metallic rods from square to rhombus structure.
    Fig. 1. (a) Unit cell where the gray surface is a cut plane along z direction; (b)−(d) the process of changing the positions of four metallic rods from square to rhombus structure.
    (a) Unit cell where = 77.31°; (b) the first Brillouin zone where blue dots and red dots represent, respectively, the Weyl points of different chirality; (c) the numerically calculated band structure, where shaded region denotes the frequency range with only Weyl degenerate bands appears.
    Fig. 2. (a) Unit cell where = 77.31°; (b) the first Brillouin zone where blue dots and red dots represent, respectively, the Weyl points of different chirality; (c) the numerically calculated band structure, where shaded region denotes the frequency range with only Weyl degenerate bands appears.
    (a)−(d) Band structure with= 90°, 81.18°, 77.31° and 60°, respectively. The inset is the top view of meta-atom, and the shaded region denotes the frequency range with only Weyl degenerate bands appears.
    Fig. 3. (a)−(d) Band structure with = 90°, 81.18°, 77.31° and 60°, respectively. The inset is the top view of meta-atom, and the shaded region denotes the frequency range with only Weyl degenerate bands appears.
    (a) Two cut planes in the first Brillouin zone where the yellow plane represents the plane of = 0.432 and the dashed line denotes the intersecting line of two planes; (b) the projected bulk bands (grey curves) and the associated surface state (blue and red curves) at = 0.432; (c) the magnitude of E -fields of the eigenmodes for different marks in (b), where z axis is horizontal; (d) two cut planes in the first Brillouin zone where the yellow plane represents the plane of and the dashed line denotes the intersecting line of two planes; (e) the projected bulk bands (grey curves) and the associated surface state (orange curves) along Γ → M; (f) the magnitude of E -fields of the eigenmodes for different marks in (e), where z axis is horizontal.
    Fig. 4. (a) Two cut planes in the first Brillouin zone where the yellow plane represents the plane of = 0.432 and the dashed line denotes the intersecting line of two planes; (b) the projected bulk bands (grey curves) and the associated surface state (blue and red curves) at = 0.432; (c) the magnitude of E -fields of the eigenmodes for different marks in (b), where z axis is horizontal; (d) two cut planes in the first Brillouin zone where the yellow plane represents the plane of and the dashed line denotes the intersecting line of two planes; (e) the projected bulk bands (grey curves) and the associated surface state (orange curves) along ΓM; (f) the magnitude of E -fields of the eigenmodes for different marks in (e), where z axis is horizontal.
    角度/(°)外尔点频率/GHz频差/GHz带宽/GHz
    $ {f}_{1} $中心频率$ {f}_{2} $
    9015.7015.7015.7003.07
    81.1815.9015.6915.480.432.29
    77.3116.0715.7015.330.741.93
    6016.4015.58514.771.630
    Table 1.

    Frequency shift of Weyl points.

    外尔点的频移效应

    Xiao-Xi Zhou, Chuan-Deng Hu, Wei-Xin Lu, Yun Lai, Bo Hou. Numerical design of frequency-split Weyl points in Weyl metamaterial[J]. Acta Physica Sinica, 2020, 69(15): 154204-1
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