Fig. 2: Three-terminal measurements.
From: Zero-field chiral edge transport in an intrinsic magnetic topological insulator MnBi2Te4

a Schematic illustration of electrode configuration and chiral edge state distribution. Blue arrowed lines indicate the transport route of chiral edge current when M < 0 whereas the red ones are chiral edge current when M > 0. b three-terminal resistance as functions of magnetic field. The red and blue curves represent resistances for up and down sweep of magnetic field, respectively.