Superconductivity in a misfit phase that combines the topological crystalline insulator Pb1-xSnxSe with the CDW-bearing transition metal dichalcogenide TiSe2

  title={Superconductivity in a misfit phase that combines the topological crystalline insulator Pb1-xSnxSe with the CDW-bearing transition metal dichalcogenide TiSe2},
  author={Huixia Luo and Kai Yan and Weiwei Xie and Brendan F. Phelan and Robert J. Cava},
  journal={Journal of the Physical Society of Japan},
  • Huixia Luo, Kai Yan, +2 authors R. Cava
  • Published 29 January 2016
  • Materials Science, Physics
  • Journal of the Physical Society of Japan
We report the characterization of the misfit compound (Pb1−xSnxSe2)1.16(TiSe2)2 for 0 ≤ x ≤ 0.6, in which a [100] rocksalt-structure bilayer of Pb1−xSnxSe, which is a topological crystalline insulator in bulk form, alternates with a double layer of the normally non-superconducting transition metal dichalcogenide TiSe2. The x dependence of Tc displays a weak dome-like shape with a maximum Tc of 4.5 K at x = 0.2; there is only a subtle change in Tc at the composition where the trivial to… 
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