Measured “Fermi arcs” on the surface of a metacrystal at 13.3 GHz.
From the article:
Straight Photonic Nodal Lines with Quadrupole Berry Curvature Distribution and Superimaging “Fermi Arcs”Dongyang Wang, Biao Yang, Ruo-Yang Zhang, Wen-Jie Chen, Z. Q. Zhang, Shuang Zhang, and C. T. Chan
Phys. Rev. Lett. 129, 043602 (2022)
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