Enhanced Superconductivity in Dirac semimetal 1T-PdTe2

Recently, two-dimensional (2D) materials, including transition metal dichalcogenides (TMDs) have received considerable attention due to their emergent physical properties, which in turn have potential to revolutionize many fields in both fundamental science and technological applications. Especially, PdTe₂ recently attracted much attention now due to its phase coexistence of type-II Dirac semimetal and type-I superconductivity. Here we report an enhancement of superconducting transition temperature in PdTe₂. The enhanced superconductivity has been unambiguously confirmed by the magnetization, resistivity and specific heat measurements, which shows type-II superconductivity with large anisotropy and non-bulk superconductivity nature with volume fraction 20% estimated from magnetic and heat capacity measurements. Enhanced superconductivity in PdTe₂ expands the family of superconducting transition metal dichalcogenides and thus provides additional insights for understanding superconductivity and topological physics in the 1T-PdTe₂ system