Owing to the specific topological states in nodal-line semimetals, novel topological superconductivity is expected to emerge in these systems. In this letter, by combination of the first-principles calculations and resistivity, susceptibility and specific heat measurements, we demonstrate that La3Pt3Bi4 is a topologically nontrivial nodal-ring semimetal protected by the gliding-mirror symmetry even in the presence of spin-orbit coupling. Meanwhile, we discover bulk superconductivity with a transition temperature of ∼1.1 K, and an upper critical field of ∼0.41 T. These findings demonstrate that La3Pt3Bi4 provides a material platform for studying novel superconductivity in the nodal-ring system.
@article{arxiv.2204.08658,
title = {Superconductivity in the nodal-line compound La$_3$Pt$_3$Bi$_4$},
author = {Liang Li and Guo-Xiang Zhi and Qinqing Zhu and Chunxiang Wu and Zhihua Yang and Jianhua Du and Jinhu Yang and Bin Chen and Hangdong Wang and Chao Cao and Minghu Fang},
journal= {arXiv preprint arXiv:2204.08658},
year = {2022}
}