Enhanced Superconductivity in the Se-substituted 1T-PdTe$_2$
Wenhao Liu, Sheng Li, hanlin Wu, Nikhil Dhale, Pawan Koirala, Bing Lv
TL;DR
This study reports a significant 67% increase in the superconducting transition temperature of 1T-PdSeTe compared to PdTe2, achieved through Se substitution, revealing new insights into superconductivity in transition metal dichalcogenides.
Contribution
It demonstrates enhanced superconductivity in 1T-PdSeTe via Se substitution, expanding the understanding of superconductivity and topological physics in PdTe2-based materials.
Findings
67% higher superconducting transition temperature in 1T-PdSeTe
Type-II superconductivity with large anisotropy observed
Superconductivity is non-bulk with ~20% volume fraction
Abstract
Two-dimensional transition metal dichalcogenide PdTe recently attracts much attention due to its phase coexistence of type-II Dirac semimetal and type-I superconductivity. Here we report a 67 % enhancement of superconducting transition temperature in the 1T-PdSeTe in comparison to that of PdTe2 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 non-bulk superconductivity nature with volume fraction ~ 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-PdTe system
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