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- W4387661708 abstract "The appearance of van Hove singularities near the Fermi level leads to prominent phenomena, including superconductivity, charge density wave, and ferromagnetism. Here a bilayer Kagome lattice with multiple van Hove singularities is designed and a novel borophene with such lattice (BK-borophene) is proposed by the first-principles calculations. BK-borophene, which is formed via three-center two-electron (3c-2e) σ-type bonds, is predicted to be energetically, dynamically, thermodynamically, and mechanically stable. The electronic structure hosts both conventional and high-order van Hove singularities in one band. The conventional van Hove singularity resulting from the horse saddle is 0.065 eV lower than the Fermi level, while the high-order one resulting from the monkey saddle is 0.385 eV below the Fermi level. Both the singularities lead to the divergence of electronic density of states. Besides, the high-order singularity is just intersected to a Dirac-like cone, where the Fermi velocity can reach 1.34 × 106 m s-1 . The interaction between the two Kagome lattices is critical for the appearance of high-order van Hove singularities. The novel bilayer Kagome borophene with rich and intriguing electronic structure offers an unprecedented platform for studying correlation phenomena in quantum material systems and beyond." @default.
- W4387661708 created "2023-10-17" @default.
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- W4387661708 date "2023-10-15" @default.
- W4387661708 modified "2023-10-17" @default.
- W4387661708 title "Bilayer Kagome Borophene with Multiple van Hove Singularities" @default.
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- W4387661708 doi "https://doi.org/10.1002/advs.202305059" @default.
- W4387661708 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37840410" @default.
- W4387661708 hasPublicationYear "2023" @default.
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