Effect of Ni Doping at Pd Site in Nb2PdS5 Superconductor

Controlling the Superconductivity of Nb2PdxS5 via Reversible Li Intercalation

“…Superconductivity is also completely suppressed when 15% of the Pd is replaced by Ni in an isoelectronic substitution. 17 By replacing sulfide in Nb 2 PdS 5 with selenide, T c decreases with increasing Se content with complete suppression at 50% Se substitution. 18 No intercalation chemistry has been reported for this compound; however, the van der Waals gap between the layers makes this material a promising candidate for the intercalation of small ions.…”

“…Superconductivity is also completely suppressed when 15% of the Pd is replaced by Ni in an isoelectronic substitution. 17 By replacing sulfide in Nb 2 PdS 5 with selenide, T c decreases with increasing Se content with complete suppression at 50% Se substitution. 18…”

“…With electron doping, with Ag replacing Pd, T c decreases until there is complete suppression when 40% of the Pd is replaced by Ag. Superconductivity is also completely suppressed when 15% of the Pd is replaced by Ni in an isoelectronic substitution . By replacing sulfide in Nb 2 PdS 5 with selenide, T c decreases with increasing Se content with complete suppression at 50% Se substitution…”

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“…The type of Fermi surface is resembled to the Fe-based superconductors whereas contradicts to the cuprate superconductors [3,4]. Various research groups have tried to enhance the transition temperature via doping or substitution of chemical elements such as Ir, Pt, Ru and Ni at Pd site, these have slightly modified the T 𝑐 , and however Ag, and Ni completely suppressed superconductivity [1,[14][15][16][17][18]. Vinay et al, have reported the enhancement of the upper critical field by doping of Te at S site [19].…”