Superconductivity in Platinum-Intercalated 2H-TaS₂

We systematically investigated the superconducting properties of 2H-PtxTaS2 (0 ≤ x ≤ 0.08). As the platinum (Pt) content increases, the charge density wave (CDW) in 2H-TaS2, which appears at approximately 75 K, is progressively suppressed and completely disappears in Pt0.06TaS2. Meanwhile, the superconducting transition temperature (Tc) first increases and then decreases, reaching its maximum value of approximately 4.85 K at x = 0.06. This phenomenon suggests a competitive interplay between CDW and superconductivity (SC) in this system. Further measurements of the superconducting parameters of Pt0.06TaS2 indicate that the enhancement of Tc is primarily attributed to an increase in the density of states at the Fermi level.