most citedObservation of emergent Dirac physics at the surfaces of acoustic higher-order topological insulators

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cond-mat.mes-hall2022★ 13 cited

Observation of emergent Dirac physics at the surfaces of acoustic higher-order topological insulators

Fei Meng, Zhi-Kang Lin, Weibai Li +5

Using three-dimensional (3D) sonic crystals as acoustic higher-order topological insulators (HOTIs), we discover two-dimensional (2D) surface states described by spin-1 Dirac equat…