Fermi arc reconstruction in synthetic photonic lattice

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)

• A comprehensive review on developments of synthetic dimensions
• Weyl points on non-orientable manifolds
• Colloquium: Synthetic quantum matter in non-standard geometries
• Manipulation of Weyl Points in Reciprocal and Nonreciprocal Mechanical Lattices
• Dispersive Drumhead States in Nodal-Line Semimetal Junctions
• Topological Lasing from Thouless Pumping in Bilayer Photonic Crystal
• Topological photonics in nanoscaled systems with far field radiation and polarization singularities
• Exceptional topology on nonorientable manifolds