Superconductivity in the face-centered cubic W-M-Rh-Ir-Pt M = {Mo, Nb, Ta, Re} high-entropy alloy

We report single-phase superconducting face-centered cubic (FCC) intermetallic high-entropy alloys (HEAs) synthesized via splat cooling. The technique gives incredibly sharp diffraction peaks and superconducting transitions in resistivity measurements than reported in conventional arc melting. The single-phase materials fall at electron counts in the HEA superconductor alloy family where structural stability and optimal superconducting electron counts clash. The materials’ superconducting properties follow the general trends published for metallic alloys. Insights are provided as to why an FCC structure may be stable.