Extended Data Fig. 5: a.c. susceptibility data before background subtraction.
From: RETRACTED ARTICLE: Evidence of near-ambient superconductivity in a N-doped lutetium hydride
Voltage in volts versus temperature plots at different pressures before the background subtraction. Cubic or quadratic polynomial background was used for background subtraction for susceptibility data. This figure shows fittings with cubic or quadratic polynomials indicated by the red lines. For a.c. susceptibility data, the background subtraction was done mainly for visualization purposes.
