论文
当前位置:
Chinese
>
科学研究
>
论文
Experimental demonstration of acoustic semimetal with topologically charged nodal surface
- 发表刊物：Science advances
- 摘要：Weyl points are zero-dimensional band degeneracy in three-dimensional momentum space that has nonzero topological charges. The presence of the topological charges protects the degeneracy points against perturbations and enables a variety of fascinating phenomena. It is so far unclear whether such charged objects can occur in higher dimensions. Here, we introduce the concept of charged nodal surface, a two-dimensional band degeneracy surface in momentum space that is topologically charged. We provide an effective Hamiltonian for this charged nodal surface and show that such a Hamiltonian can …
- 卷号：6
- 期号：8
- 页面范围：eaav2360
- 是否译文：否
- 发表时间：2020-02-01
- 发布期刊链接：https://www.science.org/doi/full/10.1126/sciadv.aav2360
