skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

Robust zero-energy modes in an electronic higher-order topological insulator

Nature materials, 2019-12, Vol.18 (12), p.1292-1297 [Peer Reviewed Journal]

Copyright Nature Publishing Group Dec 2019 ;ISSN: 1476-1122 ;EISSN: 1476-4660 ;DOI: 10.1038/s41563-019-0483-4 ;PMID: 31548630

Full text available

Citations Cited by
  • Title:
    Robust zero-energy modes in an electronic higher-order topological insulator
  • Author: Kempkes, S N ; Slot, M R ; van den Broeke, J J ; Capiod, P ; Benalcazar, W A ; Vanmaekelbergh, D ; Bercioux, D ; Swart, I ; Morais Smith, C
  • Subjects: Bonding strength ; Carbon monoxide ; Energy ; Kagome lattice ; Lattice vibration ; Optical lattices ; Photonics ; Physics ; Simulators ; Symmetry ; Topological insulators ; Topology
  • Is Part Of: Nature materials, 2019-12, Vol.18 (12), p.1292-1297
  • Description: Quantum simulators are essential tools for understanding complex quantum materials. Platforms based on ultracold atoms in optical lattices and photonic devices have led the field so far, but the basis for electronic quantum simulators is now being developed. Here, we experimentally realize an electronic higher-order topological insulator (HOTI). We create a breathing kagome lattice by manipulating carbon monoxide molecules on a Cu(111) surface using a scanning tunnelling microscope. We engineer alternating weak and strong bonds to show that a topological state emerges at the corner of the non-trivial configuration, but is absent in the trivial one. Different from conventional topological insulators, the topological state has two dimensions less than the bulk, denoting a HOTI. The corner mode is protected by a generalized chiral symmetry, which leads to a particular robustness against perturbations. Our versatile approach to designing artificial lattices holds promise for revealing unexpected quantum phases of matter.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1476-1122
    EISSN: 1476-4660
    DOI: 10.1038/s41563-019-0483-4
    PMID: 31548630
  • Source: AUTh Library subscriptions: ProQuest Central
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait