2021/02/06 by Zhiqiang Zhang, Zhi-Qiang Zhang, Bing-Lan Wu +3 · 32 citations
Materials Science · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Band gap #Condensed matter physics #Geometry #Graphene research and applications #Mathematics #Phase (matter) #Phase diagram #Physics #Quadrupole #Quantum mechanics #Scaling #Semimetal #Topological Materials and Phenomena #Topological order #Topology (electrical circuits) #Weyl semimetal #cond-mat.dis-nn
paper · pdf · doi:10.1103/physrevb.104.014203
published in Physical review. B./Physical review. B 104(1) (American Physical Society) · 9 pages, 8 figures
arxiv created 2021/02/06 · openalex publication_date 2021/07/02 · arxiv updated 2021/07/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the disorder-induced phase transition of higher-order Weyl semimetals (HOWSMs) and the fate of the topological features of disordered HOWSMs. We obtain a global phase diagram of HOWSMs utilizing the scaling theory of Anderson localization. Specifically, a phase transition from the Weyl semimetal (WSM) to the HOWSM is obtained, distinguishing the disordered HOWSMs from the traditional WSMs. Furthermore, we confirm the robustness of Weyl nodes for HOWSMs. Interestingly, the unique topological properties of HOWSMs show different behaviors: (i) the quantized quadrupole moment and the corresponding quantized charge of hinge states are fragile to weak disorder; (ii) the hinge states show moderate stability which enables the feasibility in experimental observation. Our study deepens the understanding of the topological nature of HOWSM and paves a possible way to its characterization in experiments.