The two-dimensional transition metal dichalcogenide ${\mathrm{PdTe}}_2$ has recently attracted much attention due to its phase coexistence of a type-II Dirac semimetal and type-I superconductivity. Here we report a 67% enhancement of the superconducting transition temperature in 1T-PdSeTe in comparison to that of ${\mathrm{PdTe}}_2$ through partial substitution of Te atoms by Se. The superconductivity has been unambiguously confirmed by the magnetization, resistivity, and specific heat measurements. 1T-PdSeTe shows type-II superconductivity with large anisotropy and a nonbulk superconductivity nature with a volume fraction of $\approx 20\%$ estimated from magnetic and heat capacity measurements. 1T-PdSeTe expands the family of superconducting transition metal dichalcogenides and thus provides additional insights for understanding superconductivity and topological physics in the 1T-${\mathrm{PdTe}}_2$ system

中文翻译：

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硒取代的1T-PdTe2中的超导性增强

二维过渡金属二卤化物 ${钯}_2$由于其II型Dirac半金属和I型超导电性的共存，近来引起了很多关注。在这里，我们报告了1T-PdSeTe中的超导转变温度与相比之下提高了67％。${钯}_2$通过Te原子被Se部分取代。通过磁化，电阻率和比热测量已明确证实了超导性。1T-PdSeTe表现出具有大各向异性的II型超导性和体积分数为$\approx 20％$根据磁和热容量测量结果估算。1T-PdSeTe拓宽了超导过渡金属二硫属化合物的种类，从而为了解1T-PdSeTe中的超导性和拓扑物理学提供了更多见解。${钯}_2$ 系统