肖孟

+

其他联系方式

  • 邮编:

  • 通讯/办公地址:

  • 邮箱:

论文

当前位置: Chinese > 科学研究 > 论文

Symmetry-enforced three-dimensional Dirac phononic crystals

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:Light: Science & Applications
  • 摘要:Dirac semimetals, the materials featuring fourfold degenerate Dirac points, are critical states of topologically distinct phases. Such gapless topological states have been accomplished by a band-inversion mechanism, in which the Dirac points can be annihilated pairwise by perturbations without changing the symmetry of the system. Here, we report an experimental observation of Dirac points that are enforced completely by the crystal symmetry using a nonsymmorphic three-dimensional phononic crystal. Intriguingly, our Dirac phononic crystal hosts four spiral topological surface states, in which …
  • 卷号:9
  • 期号:1
  • 页面范围:1-6
  • 是否译文:
  • 发表时间:2020

Copyright武汉大学2018 地址:湖北省武汉市武昌区八一路299号 邮编:430072
鄂ICP备05003330鄂公网安备42010602000219