Raising Tc in charge density wave superconductor ZrTe3 by Ni   intercalation
  We report discovery of bulk superconductivity in Ni0.05ZrTe3 at Tc = 3.1 K, obtained through Ni intercalation. Superconductivity coexists with charge density wave (CDW) state with TCDW = 41 K. When compared to parent material ZrTe3, filamentary superconducting transition is substantially increased whereas TCDW was suppressed. The analysis of superconducting state indicates that Ni0.05ZrTe3 is an intermediately coupled superconductor. 
Hechang Lei, Xiangde Zhu, and C. Petrovic
cond-mat.supr-con cond-mat.mtrl-sci