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  • Letter
  • Open Access

Superconductivity in the nodal-line compound La3Pt3Bi4

Liang Li1,*, Guo-Xiang Zhi2,*, Qinqing Zhu1, Chunxiang Wu2, Zhihua Yang1, Jianhua Du3, Jinhu Yang1, Bin Chen1, Hangdong Wang1,† et al.

Chao Cao2,4,‡ and Minghu Fang2,5,§

  • 1Hangzhou Key Laboratory of Quantum Matter, School of Physics, Hangzhou Normal University, Hangzhou 311121, China
  • 2Department of Physics, Zhejiang University, Hangzhou 310027, China
  • 3Department of Physics, China Jiliang University, Hangzhou 310018, China
  • 4Center for Correlated Matter, Zhejiang University, Hangzhou 310058, China
  • 5Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

  • *These authors contributed equally to this work.
  • †hdwang@hznu.edu.cn
  • ‡ccao@hznu.edu.cn
  • §mhfang@zju.edu.cn
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Phys. Rev. Research 4, L032004 – Published 7 July, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L032004

Abstract

Owing to the specific topological states in nodal-line semimetals, novel topological superconductivity is expected to emerge in these systems. In this Letter, we demonstrate that La3Pt3Bi4 is a topologically nontrivial nodal-ring semimetal protected by the gliding-mirror symmetry using first-principles calculations. Meanwhile, we discover bulk superconductivity with a transition temperature of ∼1.1 K and an upper critical field of ∼0.41 T by means of resistivity, susceptibility, and specific heat measurements. These findings demonstrate that La3Pt3Bi4 provides a material platform for studying novel superconductivity in the nodal-ring system.

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Phys. Rev. Research 4, L032004– Published 7 July, 2022
  • Received 14 February 2022
  • Revised 17 June 2022
  • Accepted 21 June 2022
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