Fig. 2: Nonlocal measurements.
From: Quantum anomalous Hall edge channels survive up to the Curie temperature
Individual contact potentials in the magnetized state at zero external magnetic field, normalized to the bias voltage. The bias voltage is applied to contact A with contact 1 grounded. The temperature of the measurement is: 25 mK (a), 560 mK (b), 1.4 K (c), 4.2 K (d), 11.6 K (e), 14 K (f), and 20.9 K with 25 K (g). Below the data in a–f, the corresponding simulated curves are plotted. (Contact 4 was not accessible during the measurement run below 1.4 K). At 1.4 K and above, the measurements of contacts B and 2 were multiplied by a factor of 1.00357, and contacts C and 3 by a factor of 0.9943, to correct for the amplifier gain differences between the different instruments in the experiment. Color coding is the same in (a–g). h A schematic of the system’s chirality, with a description of the contact voltage order stemming from the chiral edge channel transport with bulk dissipation.
