Acta Physica Sinica, Volume. 69, Issue 15, 154204-1(2020)

Numerical design of frequency-split Weyl points in Weyl metamaterial

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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    Weyl semimetal has the massless and chiral low-energy electronic excitation charateristic, and its quasi-particle behavior can be described by Weyl equation, and may lead to appealing transport properties, such as Fermi arc surface state, negative magnetic resistance, chiral Landau level, etc. By analogous with Weyl semimetal, one has realized Weyl point degeneracy of electromagnetic wave in an ideal Weyl metamaterial. In this article, by breaking the mirror symmetry of the saddle-shaped meta-atom structure, we theoretically investigate chirality-dependent split and shift effect of Weyl point frequencies which would otherwise be identical. The frequency shift can be tuned by the symmetry-broken intensity. Finally, we study the Fermi arc surface state connecting two Weyl points on $\left\langle {001} \right\rangle $ crystal surface.

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    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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    Paper Information

    Received: Feb. 9, 2020

    Accepted: --

    Published Online: Dec. 30, 2020

    The Author Email: Hou Bo (houbo@suda.edu.cn)

    DOI:10.7498/aps.69.20200195

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