Matches in SemOpenAlex for { <https://semopenalex.org/work/W4289918688> ?p ?o ?g. }
- W4289918688 abstract "Abstract Flat bands and dispersive Dirac bands are known to coexist in the electronic bands in a two-dimensional kagome lattice. Including the relativistic spin-orbit coupling, such systems often exhibit nontrivial band topology, allowing for gapless edge modes between flat bands at several locations in the band structure, and dispersive bands or at the Dirac band crossing. Here, we theoretically demonstrate that a multiorbital system on a kagome lattice is a versatile platform to explore the interplay between nontrivial band topology and electronic interaction. Specifically, here we report that the multiorbital kagome model with the atomic spin–orbit coupling naturally supports topological bands characterized by nonzero Chern numbers $${{{{{{{mathcal{C}}}}}}}}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>C</mml:mi> </mml:math> , including a flat band with $$| {{{{{{{mathcal{C}}}}}}}}| =1$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mo>∣</mml:mo> <mml:mi>C</mml:mi> <mml:mo>∣</mml:mo> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:math> . When such a flat band is 1/3 filled, the non-local repulsive interactions induce a fractional Chern insulating state. We also discuss the possible realization of our findings in real kagome materials." @default.
- W4289918688 created "2022-08-06" @default.
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- W4289918688 date "2022-08-05" @default.
- W4289918688 modified "2023-10-14" @default.
- W4289918688 title "Topological flat bands in a kagome lattice multiorbital system" @default.
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- W4289918688 doi "https://doi.org/10.1038/s42005-022-00969-1" @default.
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