肖孟
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其他联系方式
邮编：430072
通讯/办公地址：物理科学与技术学院，D303
邮箱：phmxiao@whu.edu.cn
论文
Experimental demonstration of acoustic semimetal with topologically charged nodal surface
- 发布时间：2020-05-16
- 点击次数：
- 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