globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.01.024
论文题名:
Gapped topological kink states and topological corner states in honeycomb lattice
作者: Yang Y.; Jia Z.; Wu Y.; Xiao R.-C.; Hang Z.H.; Jiang H.; Xie X.C.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:7
起始页码: 531
结束页码: 537
语种: 英语
中文关键词: Domain-wall-induced topological states ; Honeycomb photonic crystal ; Topological corner states ; Topological kink states ; Topological quantum dot
英文关键词: Carbon Quantum Dots ; Domain walls ; Graphene quantum dots ; Honeycomb structures ; Nanocrystals ; Semiconductor quantum dots ; Experimental visualization ; Honeycomb photonic crystals ; Kink state ; Lattice deformation ; Sublattice symmetry ; Tight-binding calculations ; Topological corner states ; Topological state ; Topology
英文摘要: Based on the tight-binding calculations on honeycomb lattice and photonic experimental visualization on artificial graphene (AG), we report the domain-wall-induced gapped topological kink states and topological corner states. In honeycomb lattice, domain walls (DWs) with gapless topological kink states could be induced either by sublattice symmetry breaking or by lattice deformation. We find that the coexistence of these two mechanisms will induce DWs with gapped topological kink states. Significantly, the intersection of these two types of DWs gives rise to topological corner state localized at the crossing point. Through the manipulation of the DWs, we show AG with honeycomb lattice structure not only a versatile platform supporting multiple topological corner modes in a controlled manner, but also possessing promising applications such as fabricating topological quantum dots composed of gapped topological kink states and topological corner states. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170115
Appears in Collections:气候变化与战略

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作者单位: School of Physical Science and Technology, Soochow University, Suzhou, 215006, China; International Center for Quantum Materials, Peking University, Beijing, 100871, China; Institute for Advanced Study, Soochow University, Suzhou, 215006, China; Beijing Academy of Quantum Information Sciences, Beijing, 100193, China; CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China

Recommended Citation:
Yang Y.,Jia Z.,Wu Y.,et al. Gapped topological kink states and topological corner states in honeycomb lattice[J]. Science Bulletin,2020-01-01,65(7)
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