STM shows PtPb4 has a standard s-wave BCS superconducting gap at its surface, with some defect-related patches retaining superconducting signatures up to 1.5 T and 5 K, well above the bulk Hc2 and Tc.
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Superconducting density of states of PtPb4
STM shows PtPb4 has a standard s-wave BCS superconducting gap at its surface, with some defect-related patches retaining superconducting signatures up to 1.5 T and 5 K, well above the bulk Hc2 and Tc.