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Geometric phase and band inversion in periodic acoustic systems

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:Nature Physics
  • 摘要:The geometric-phase concept has far-reaching implications in many branches of physics 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14. The geometric phase that specifically characterizes the topological property of bulk bands in one-dimensional periodic systems is known as the Zak phase 15, 16. Recently, it has been found that topological notions can also characterize the topological phase of mechanical isostatic lattices 13. Here, we present a theoretical framework and two experimental methods to determine the Zak phase in a periodic acoustic system. We constructed a phononic crystal with …
  • 论文类型:期刊论文
  • 卷号:11
  • 期号:3
  • 页面范围:240-244
  • 是否译文:
  • 发表时间:2015

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