Realization of a 2D Lieb Lattice in a Metal–Inorganic Framework with Partial Flat Bands and Topological Edge States
Flat bands and Dirac cones in materials are the source of the exotic electronic and topological properties. The Lieb lattice is expected to host these electronic structures, arising from quantum destructive interference. Nevertheless, the experimental realization of a 2D Lieb lattice remained challenging to date due to its intrinsic structural instability. After computationally designing a Platinum-Phosphorus (Pt-P) Lieb lattice, it has successfully overcome its structural instability and synthesized on a gold substrate via molecular beam epitaxy. Low-temperature scanning tunneling microscopy and spectroscopy verify the Lieb lattice's morphology and electronic flat bands. Furthermore, topological Dirac edge states stemming from pronounced spin-orbit coupling induced by heavy Pt atoms are predicted. These findings convincingly open perspectives for creating metal-inorganic framework-based atomic lattices, offering prospects for strongly correlated phases interplayed with topology.
Authors
- Jianxin Zhong
- Chi Sin Tang (ORCID: https://orcid.org/0000-0002-2414-7192)
- M. V. Miloševıć (ORCID: https://orcid.org/0000-0002-5431-377X)
- Jing Wu (ORCID: https://orcid.org/0000-0002-4182-6701)
- Xinmao Yin (ORCID: https://orcid.org/0000-0002-8246-4444)
- Chuanbing Cai (ORCID: https://orcid.org/0000-0003-0253-7752)
- Shuo Sun (ORCID: https://orcid.org/0000-0001-6092-7148)
- Andrew T. S. Wee (ORCID: https://orcid.org/0000-0002-5828-4312)
- Lingfeng Zhang (ORCID: https://orcid.org/0000-0003-4891-0073)
- Wenjun Wu (ORCID: https://orcid.org/0009-0009-8369-9059)
- Yu Ma (ORCID: https://orcid.org/0009-0008-4395-1240)
Institutions
- Shanghai University (CN)
- Agency for Science, Technology and Research (SG)
- University of Antwerp (BE)
- National University of Singapore (SG)
- Institute of Materials Research and Engineering (SG)
Publication Details
- Journal
- Advanced Materials
- Published
- 2024-08-23
- DOI
- https://doi.org/10.1002/adma.202405615
- Citations
- 12
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 4.05
Funders
- National Natural Science Foundation of China
- Science and Technology Commission of Shanghai Municipality
- National Key Research and Development Program of China