典型文献
Topological nature of higher-order hinge states revealed by spin transport
文献摘要：
One-dimensional(1D)gapless hinge states are predicated in the three-dimensional(3D)higher-order topological insulators and topological semimetals,because of the higher-order bulk-boundary correspon-dence.Nevertheless,the topologically protected property of the hinge states is still not demonstrated so far,because it is not accessible by conventional methods,such as spectroscopy experiments and quantum oscillations.Here,we reveal the topological nature of hinge states in the higher-order topological semi-metal Cd3As2 nanoplate through spin potentiometric measurements.The results of current induced spin polarization indicate that the spin-momentum locking of the higher-order hinge state is similar to that of the quantum spin Hall state,showing the helical characteristics.The spin-polarized hinge states are robust up to room temperature and can nonlocally diffuse a long distance larger than 5 μm,further indi-cating their immunity protected by topology.Our work deepens the understanding of transport proper-ties of the higher-order topological materials and should be valuable for future electronic and spintronic applications.
文献关键词：
中图分类号：
作者姓名：
An-Qi Wang;Peng-Zhan Xiang;Tong-Yang Zhao;Zhi-Min Liao
作者机构：
State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China
文献出处：
引用格式：
[1]An-Qi Wang;Peng-Zhan Xiang;Tong-Yang Zhao;Zhi-Min Liao-.Topological nature of higher-order hinge states revealed by spin transport)[J].科学通报（英文版）,2022(08):788-793
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