Journal Article

FZJ-2023-00463

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fabrication and Imaging Monatomic Ni Kagome Lattice on Superconducting Pb(111)

Lin, Y.-H. ; Chen, C.-J. ; Kumar, N. ; Yeh, T.-Y. ; Lin, T.-H. ; Blügel, S.FZJ* ; Bihlmayer, G. (Corresponding author)FZJ* ; Hsu, P.-J. (Corresponding author)

2022
ACS Publ. Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/33707  doi:10.1021/acs.nanolett.2c02831

Abstract: Artificial fabrication of a monolayer Kagome material can offer a promising opportunity to explore exceptional quantum states and phenomena in low dimensionality. Here, we have systematically studied a monatomic Ni Kagome lattice grown on Pb(111) by scanning tunneling microscopy/spectroscopy (STM/STS) and density functional theory (DFT). Sawtooth edge structures with distinct heights due to subsurface Ni atoms have been revealed, leading to asymmetric edge scattering of surface electrons on Pb(111). In addition, a local maximum at about −0.2 eV in tunneling spectra represents a manifestation of characteristic phase-destructive flat bands. Although charge transfer from underlying Pb(111) substrate results in a vanishing magnetic moment of Ni atoms, the proximity-induced superconducting gap is slightly enhanced on the Ni Kagome lattice. In light of single-atomic-layer Ni Kagome lattice on superconducting Pb(111) substrate, it could serve as an ideal platform to investigate the interplay between Kagome physics and superconductivity down to the two-dimensional limit.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Quanten-Theorie der Materialien (IAS-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)

Appears in the scientific report 2022

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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