The combination with superconductivity and topological nontrivial band
structure provides a promising route towards novel quantum states such as
topological superconductivity. Here, we report the first observation of
superconductivity (4.1 K) in Ba5In4Bi5 single crystal, a noncentrosymmetric
topological semimetal featuring nodal chain loops at the high-symmetry points R
and X. The magnetization, resistivity, and specific heat capacity measurements
reveal that Ba5In4Bi5 is a moderately coupled type-II Bardeen-Cooper-Schrieffer
superconductor. Bulk superconductivity is suggested from the magnetic
susceptibility and specific heat measurements. The results show that Ba5In4Bi5
provides a new platform for exploring the relationship of superconductivity and
topological nontrivial band topology
