Superconductivity in electron doped PbBi2Te4

Xianghan Xu; Danrui Ni; Weiwei Xie; R. J. Cava

Superconductivity in electron doped PbBi2Te4

Superconductivity 2023-08-25 v1 Materials Science

Authors: Xianghan Xu , Danrui Ni , Weiwei Xie , R. J. Cava

Abstract

Single crystals of In-doped PbBi2Te4 are synthesized via a conventional solid-state method. Chemical analysis and hall measurements indicate that In replaces Pb, introducing n-type carriers, creating Pb1-xInxBi2Te4. A superconducting transition is observed with a maximum transition temperature around 2.06 K for Pb1-xInxBi2Te4. Field dependent transport measurements reveal type-II superconductivity and yield a maximum upper critical field around 1.55 T. Thermodynamic data indicates bulk superconductivity in the BCS weak coupling limit. Our findings establish an ambient-pressure superconducting system in the AM2X4 family, and doped PbBi2Te4 as a promising platform for the study of topological superconductivity.

Keywords

high-temperature superconductivity single crystal superconductivity superconductivity

Cite

@article{arxiv.2308.12414,
  title  = {Superconductivity in electron doped PbBi2Te4},
  author = {Xianghan Xu and Danrui Ni and Weiwei Xie and R. J. Cava},
  journal= {arXiv preprint arXiv:2308.12414},
  year   = {2023}
}

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PRB accepted 11 pages main text + 4 pages SI

Superconductivity in electron doped PbBi2Te4

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