Fig. S3.

Field-dependent transport measurements on CeNi_2−δAs₂ at ambient pressure. (A) Temperature dependence of resistivity under various fields. (B) Low-temperature resistivity at B = 2.8, 3.0, and 9.0 T plotted against $T^n$. Isothermal magnetoresistivity (C) and derivative of the Hall resistivity (D) as functions of B. The dashed lines track the critical field $B_c$ as a function of T. For clarity, the curves have been shifted vertically.