309 citations · 454 across the 9 of their papers we have counts for
9 papers
Topological phononic metamaterials
Weiwei Zhu, Weiyin Deng, Yang Liu +6
The concept of topological energy bands and their manifestations have been demonstrated in condensed matter systems as a fantastic paradigm toward unprecedented physical phenomena…
Direct measurement of acoustic spectral density and fractional topological charge
Hao Ge, Zi-Wei Long, Xiang-Yuan Xu +5
Local density-of-states (LDOS) is a fundamental spectral property that plays a central role in various physical phenomena such as wave-matter interactions. Here, we report on the d…
Topological phenomena at topological defects
Zhi-Kang Lin, Qiang Wang, Yang Liu +4
There are two prominent applications of the mathematical concept of topology to the physics of materials: band topology, which classifies different topological insulators and semim…
Observation of fractional topological numbers at photonic edges and corners
Chengpeng Liang, Yang Liu, Fei-Fei Li +3
Topological phases of matter are featured with exotic edge states. However, the fractional topological numbers at edges, though predicted long ago by Jackiw and Rebbi, remain elusi…
p-orbital disclination states in non-Euclidean geometries
Ying Chen, Yuhang Yin, Ze-Huan Zheng +5
Disclinations are ubiquitous lattice defects existing in almost all crystalline materials. In two-dimensional nanomaterials, disclinations lead to the warping and deformation of th…
Experimental realization of single-plaquette gauge flux insertion and topological Wannier cycles
Zhi-Kang Lin, Ying Wu, Bin Jiang +4
Gauge fields are at the heart of the fundamental science of our universe and various materials. For instance, Laughlin's gedanken experiment of gauge flux insertion played a major…
An all-dielectric photonic crystal with unconventional higher-order topology
Shiqiao Wu, Bin Jiang, Yang Liu +1
Photonic crystals have been demonstrated as a versatile platform for the study of topological phenomena. The recent discovery of higher order topological insulators introduces new…
Experimental discovery of bulk-disclination correspondence
Yang Liu, Shuwai Leung, Fei-Fei Li +4
Most natural and artificial materials have crystalline structures from which abundant topological phases emerge [1-6]. The bulk-edge correspondence, widely-adopted in experiments t…
Snake states and their symmetries in graphene
Yang Liu, Rakesh P. Tiwari, Matej Brada +3
Snake states are open trajectories for charged particles propagating in two dimensions under the influence of a spatially varying perpendicular magnetic field. In the quantum limit…