Supplementary Material

The supplementary material includes additional figures related to our setup: (1) A demonstration of the Hall effect and measurement probes, (2) An actual image of our setup, (3) A machine drawing of the sample holder, (4) The electronic circuitry, (5) Additional plots for temperature profiling, (6) A flowchart illustrating the algorithm for Hall measurements at varying temperatures, and (7) The as-measured voltage $\rm V_m$ and extracted $\rm V_{xx}$ and $\rm V_{xy}$ components at 700~K versus applied magnetic field, for $\rm Nb_{0.83}CoSb$ sample.