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Shining a Light on Chiral Symmetry Breaking in Graphene May 19, 2021• Physics 14, 76 Sensitive photoemission measurements visualize the signatures of a symmetry-broken phase of graphene with carriers of mixed handedness. C. Bao Figure 1: (a) Graphene lattice and unit cell (orange diamond) highlighting the distinct A and B sublattices (inset). (b) Schematic of graphene pseudospin chirality around each Dirac point ( K and Kʹ) in the graphene Brillouin zone (orange hexagon). (c) Graphene with a lattice of lithium atoms creating a new Kekulé-O bond pattern (purple diamond). (d) The K...

 E-Mail IMAGE: a, sketch of a system with an array of main resonance modes a_m connected via a series of connecting modes c_m^((n)), with the decay rate κ_m^((n)); b, sketch of a... view more  Credit: by Xinyao Huang, Cuicui Lu, Chao Liang, Honggeng Tao, and Yong-Chun Liu Optical nonreciprocity, which prohibits the light field returning along the original path after passing through the optical system in one direction, is not only of vast interest to fundamental science, which brings us a deeper understanding of Lorentz reciprocity, time-reversal symmetry, and topological effects, b...