Enhanced superconductivity by Na doping in SnAs-based layered compound Na${}_{1+x}$Sn${}_{2-x}$As${}_2$

Hao Yuwen, Yosuke Goto, Rajveer Jha +6

Superconducting transition temperature (Tc) reported in SnAs-based layered compound NaSn${}_2$As${}_2$ varies from 1.2 to 1.6 K, implying that its superconductivity is critically sensi…