Antimony telluride homologous superlattices with two to four antimonene layers exhibit a saddle point and associated van Hove singularity near the M-point, driven by Sb and Te pz orbital hybridization.
Van Hove, The occurrence of singularities in the elastic frequency distribution of a crystal, Phys
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In the 2D attractive Hubbard model, Tc is enhanced near Van Hove singularities only for weak interactions, while the global maximum Tc occurs at intermediate coupling away from the singularity.
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Evolution of the Saddle Point in Antimony Telluride Homologous Superlattices
Antimony telluride homologous superlattices with two to four antimonene layers exhibit a saddle point and associated van Hove singularity near the M-point, driven by Sb and Te pz orbital hybridization.
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Superconductivity near two-dimensional Van Hove singularities: a determinant quantum Monte Carlo study
In the 2D attractive Hubbard model, Tc is enhanced near Van Hove singularities only for weak interactions, while the global maximum Tc occurs at intermediate coupling away from the singularity.