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The kagome lattice, whose electronic valence band (VB) structure includes two Dirac bands and one flat band1–3, offers a rich space to realise tuneable topological and strongly correlated electronic phases1,4… Click to show full abstract
The kagome lattice, whose electronic valence band (VB) structure includes two Dirac bands and one flat band1–3, offers a rich space to realise tuneable topological and strongly correlated electronic phases1,4 in two-dimensional (2D) and layered materials. While strong electron correlations have been observed in inorganic kagome crystals5,6, they remain elusive in organic systems7,8. The latter offer versatile synthesis protocols via molecular self-assembly and metal-ligand coordination9. Here, we report the synthesis of a 2D metal-organic framework (MOF) where di-cyano-anthracene (DCA) molecules form a kagome arrangement via coordination with copper (Cu) atoms on a silver surface [Ag(111)]. Low-temperature scanning tunnelling spectroscopy revealed Kondo screening – by the Ag(111) conduction electrons – of
Journal Title: Advanced Functional Materials
Year Published: 2021
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