Discovering topological surface states of Dirac points

Autor:	Cheng, Hengbin, Sha, Yixin, Liu, Rongjuan, Fang, Chen, Lu, Ling
Rok vydání:	2020
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 124, 104301 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.124.104301
Popis:	Dirac materials, unlike the Weyl materials, have not been found in experiments to support intrinsic topological surface states, as the surface arcs in existing systems are unstable against symmetry-preserving perturbations. Utilizing the proposed glide and time-reversal symmetries, we theoretically design and experimentally verify an acoustic crystal of two frequency-isolated three-dimensional Dirac points with $Z_2$ monopole charges and four gapless helicoid surface states. Comment: 14 pages, 8 figures, 5 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2001.06205 Zobrazit plný text záznamu View this record from Arxiv