Time-periodic corner states from Floquet higher-order topology

• Published in: Nature communications Vol. 13; no. 1; pp. 11 - 6
• Main Authors: Zhu, Weiwei, Xue, Haoran, Gong, Jiangbin, Chong, Yidong, Zhang, Baile
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 10.01.2022; Nature Publishing Group; Nature Portfolio
• Subjects: 639/766/119/2792/4128; 639/766/25/3927; Acoustic insulation; Acoustic measurement; Acoustic waveguides; Acoustics; Boundaries; Crystals; Humanities and Social Sciences; Lattice vibration; multidisciplinary; Oscillations; Science; Science (multidisciplinary); Time dependence; Topological insulators; Topology

The recent discoveries of higher-order topological insulators (HOTIs) have shifted the paradigm of topological materials, previously limited to topological states at boundaries of materials, to include topological states at boundaries of boundaries, such as corners. So far, all HOTI realisations hav...