Dresden 2026 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 93: Superconductivity – Poster II
TT 93.8: Poster
Thursday, March 12, 2026, 18:00–20:00, P4
physical properties of the superconductor NiBi3 — •Po-Yuan Cheng1,2, Shan-Fu Chang1,2, Pang-Shun Kuo1,2, and Chien-Lung Huang1,2 — 1Department of Physics, National Cheng Kung University, Tainan 701, Taiwan — 2Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan 701, Taiwan
We investigate the superconducting properties of the needle-like compound NiBi3 by electrical resistivity and specific-heat measurements down to low temperatures. Both probes reveal a superconducting transition at a critical temperature Tc = 4 K, with an upper critical field Hc2 = 4 kOe. High-pressure resistivity measurements up to 20 GPa show that Tc decreases linearly with pressure, which is consistent with phonon-mediated superconductivity. The temperature dependence of the electronic specific-heat is well described by a single-gap s-wave model. In conclusion, these experimental results demonstrate that NiBi3 is a conventional BCS superconductor.
Keywords: superconductivity; specific heat; High-pressure