Observation of two-level critical-state in a van-der-Waals superconductor Pt(Bi${}_{1-x}$Se${}_x$)${}_2$

Y. Samukawa, M. Maeda, N. Jiang +6

Trigonal PtBi${}_2$ is one of the attractive van-der-Waals materials because of the enhancement of its superconducting transition temperature $T_{\mathrm{c}}$ by doping chalcogen element…