ARPES and DFT show that t-PtBi2 surface Fermi arcs host a van Hove singularity and a momentum-dependent flat band, with spatially varying arc size that could tune superconductivity.
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Three prerequisites for high-temperature superconductivity in t-PtBi$_2$
ARPES and DFT show that t-PtBi2 surface Fermi arcs host a van Hove singularity and a momentum-dependent flat band, with spatially varying arc size that could tune superconductivity.