Continuous evolution of Fermi arcs and the achieved electromagnetic pulling force. (IMAGE)
Caption
Continuous evolution of Fermi arcs and the achieved electromagnetic pulling force. a, Schematic showing how Fermi arcs can be adjusted by varying the thickness of an air layer sandwiched between two Weyl media. These Weyl media have only two equal-frequency Weyl degenerates (red and blue dots) in momentum space. The chirality of the Weyl degenerates in the upper and lower WMs is reversed, indicated by the different colors. The red and blue curves represent the two Fermi arcs that connect the projections of the Weyl degenerates. b, Schematic of the configuration used to support the pulling waves. An electric dipole (y direction) is enclosed in the air layer, which serves as the source of waves. Scatterers in various shapes are attracted by the Fermi arc waves.
Credit
by Yachao Liu, Mingwei Wang, Yongqing Huang, Guo Ping Wang, and Shuang Zhang
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License
CC BY