Fermi arc reconstruction in synthetic photonic lattice
arXiv:2211.07230 · doi:10.1103/PhysRevLett.131.053602
Abstract
The chiral surface states of Weyl semimetals have an open Fermi surface called Fermi arc. At the interface between two Weyl semimetals, these Fermi arcs are predicted to hybridize and alter their connectivity. In this letter, we numerically study a one-dimensional (1D) dielectric trilayer grating where the relative displacements between adjacent layers play the role of two synthetic momenta. The lattice emulates 3D crystals without time-reversal symmetry, including Weyl semimetal, nodal line semimetal, and Chern insulator. Besides showing the phase transition between Weyl semimetal and Chern insulator at telecom wavelength, this system allows us to observe the Fermi arc reconstruction between two Weyl semimetals, confirming the theoretical predictions.
Main text: 4 pages, 4 figures. Supplemental materials: 19 pages, 18 figures
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Cited by in corpus (8)
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