Symmetrical Binding for Topological States A new technique creates defects in a topological acoustic
Symmetrical Binding for Topological States A new technique creates defects in a topological acoustic system that don’t destroy the system’s chiral symmetry, protecting its topological states. […] In a material with a so-called topologically protected state, particles—electrons, photons, or phonons, for example—can move around boundaries in the material without losing energy or being scattered. One way to make a material with such a state is to add into its lattice one or more defects that violate the lattice’s rotational symmetry—for example, disclinations (line defects). However, such defects can break the lattice’s chiral symmetry, which helps protect the topological state. Now, Yun Jing of Pennsylvania State University and colleagues propose and demonstrate a way to ensure chiral symmetry is preserved in the presence of such a defect [1]. Read more. -- source link
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