Pd site doping effect on superconductivity in Nb2Pd0.76S5

C. Y. Shen; B. Q. Si; H. Bai; X. J. Yang; Q. Tao; G. H. Cao; Z. A. Xu

Pd site doping effect on superconductivity in Nb2Pd0.76S5

Superconductivity 2016-02-25 v1

Authors: C. Y. Shen , B. Q. Si , H. Bai , X. J. Yang , Q. Tao , G. H. Cao , Z. A. Xu

Abstract

Pd site doping effect on superconductivity was investigated in quasi-one-dimensional superconductor Nb2(Pd1-xRx)0.76S5 (R=Ir, Ag) by measuring resistivity, magnetic susceptibility and Hall effect. It was found that superconducting transition temperature (Tc) is firstly slightly enhanced by partial substitution of Pd with Ir and then it is suppressed gradually as Ir content increases further. Meanwhile Ag substitution quickly suppresses the system to a nonsuperconducting ground state. Hall effect measurements indicate the variations of charge carrier density caused by Ir or Ag doping. The established phase diagram implies that the charge carrier density (or the band filling) could be one of the crucial controlling factors to determine Tc in this system.

Keywords

doping in semiconductors high-temperature superconductivity superconductivity

Cite

@article{arxiv.1602.07411,
  title  = {Pd site doping effect on superconductivity in Nb2Pd0.76S5},
  author = {C. Y. Shen and B. Q. Si and H. Bai and X. J. Yang and Q. Tao and G. H. Cao and Z. A. Xu},
  journal= {arXiv preprint arXiv:1602.07411},
  year   = {2016}
}

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5 pages, 5 figures. EPL in press

Pd site doping effect on superconductivity in Nb2Pd0.76S5

Abstract

Keywords

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