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Observation of quadratic Weyl points and double-helicoid arcs
- 发表刊物：Nature communications
- 摘要：Novel quasiparticles beyond those mimicking the elementary high-energy particles such as Dirac and Weyl fermions have attracted great interest in condensed-matter physics and materials science. Here we report an experimental observation of the long-desired quadratic Weyl points by using a three-dimensional chiral metacrystal of sound waves. Markedly different from the newly observed unconventional quasiparticles, such as the spin-1 Weyl points and the charge-2 Dirac points featuring respectively threefold and fourfold band crossings, the charge-2 Weyl points identified here are simply twofold…
- 论文类型：期刊论文
- 卷号：11
- 期号：1
- 页面范围：1-6
- 是否译文：否
- 发表时间：2020-04-14
- 发布期刊链接：https://www.nature.com/articles/s41467-020-15825-5
