人工石墨烯结构中有带隙的拓扑界面态和拓扑角态（英文）

被引：12
作者：
杨玉婷 [1 ]
贾子源 [1 ]
吴宜家 [2 ]
肖瑞春 [1 ]
杭志宏 [1 ,3 ]
江华 [1 ,3 ]
谢心澄 [2 ,4 ,5 ]
机构：
[1] School of Physical Science and Technology, Soochow University
[2] International Center for Quantum Materials, Peking University
[3] Institute for Advanced Study, Soochow University
[4] Beijing Academy of Quantum Information Sciences
[5] CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of
来源：
Science Bulletin | 2020年 / 65卷 / 07期
关键词：
Topological corner states; Topological kink states; Topological quantum dot; Honeycomb photonic crystal; Domain-wall-induced topological states;
D O I：
暂无
中图分类号：
O613.71 [碳C];
学科分类号：
摘要：
近年来,六角晶格体系中子格破缺畴壁或31/2×31/2晶格畸变畴壁导致的无能隙的拓扑界面态分别引起了广泛的关注.本文通过理论分析结合光子晶体实验研究了同时存在以上两种机制时六角人工石墨烯体系畴壁导致的拓扑态.研究发现子格破缺畴壁和31/2×31/2畴壁独立引起的无能隙的拓扑界面态有类似的拓扑起源;然而由于质量正交,在两种机制共存时,畴壁存在有能隙的拓扑界面态.当两类畴壁交叉时,在交叉点存在拓扑角态,这为二阶拓扑绝缘体研究提供了一个新的视角.进一步,发现通过调控这两类畴壁,可以在一个样品有效集成多种拓扑态并调控它们的相互作用.基于此,提出将无能隙/有能隙拓扑界面态以及拓扑角态集成到同一光子晶体样品,从而构成拓扑量子点的新设想.本文的主要结果不依赖于具体的实验平台,在凝聚态体系和其他经典波体系也成立.
引用
收藏
页码：531 / 537
页数：7
相关论文
共 123 条
  • [1] Quantized electric multipole insulators
    Benalcazar, Wladimir A.
    Bernevig, B. Andrei
    Hughes, Taylor L.
    [J]. SCIENCE, 2017, 357 (6346) : 61 - 66
  • [2] Quantized electric multipole insulators
    Benalcazar, Wladimir A.
    Bernevig, B. Andrei
    Hughes, Taylor L.
    [J]. SCIENCE, 2017, 357 (6346) : 61 - 66
  • [3] Current Partition at Topological Channel Intersections. Z. H. Qiao,J. Jung,C. W. Lin, et al. Physical Review . 2014
  • [4] Current Partition at Topological Channel Intersections. Z. H. Qiao,J. Jung,C. W. Lin, et al. Physical Review . 2014
  • [5] Topological protection of photonic midgap defect modes. Noh J,Benalcazar WA,Huang S,et al. Nat Photonics . 2018
  • [6] Topological protection of photonic midgap defect modes. Noh J,Benalcazar WA,Huang S,et al. Nat Photonics . 2018
  • [7] Observation of higher-order topological acoustic states protected by generalized chiral symmetry. Ni X,Weiner M,Alu A,et al. Nanostructured Materials . 2019
  • [8] Observation of higher-order topological acoustic states protected by generalized chiral symmetry. Ni X,Weiner M,Alu A,et al. Nanostructured Materials . 2019
  • [9] Acoustic higher-order topological insulator on a kagome lattice. Xue H,Yang Y,Gao F,et al. Nanostructured Materials . 2019
  • [10] Acoustic higher-order topological insulator on a kagome lattice. Xue H,Yang Y,Gao F,et al. Nanostructured Materials . 2019
12345678910