Superconducting phase diagram and nontrivial band topology of structurally modulated Sn1−xSbx

  title={Superconducting phase diagram and nontrivial band topology of structurally modulated 
  author={Bin Liu and Chengcheng Xiao and Qinqing Zhu and Jifeng Wu and Yan-Wei Cui and Hangdong Wang and Zhicheng Wang and Yunhao Lu and Zhi-An Ren and Guanghan Cao},
  journal={Physical Review Materials},
  • Bin LiuC. Xiao G. Cao
  • Published 30 June 2019
  • Physics, Materials Science
  • Physical Review Materials
We report the discovery of superconductivity in binary alloy Sn$_{1-x}$Sb$_{x}$ with $x$ in the range of 0.43 to 0.6, which possesses a modulated rhombohedral structure due to the incommensurate ordering of Sn and Sb layers along the $c$-axis. The specific heat measurements indicate a weakly coupled, fully gapped superconducting state in this homogeneity range with a maximum bulk $T_{\rm c}$ of 1.58 K at $x$ = 0.46, though the electronic specific heat and Hall coefficients remain nearly $x… 
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