Fig. 1: Observation of the canted-antiferromagnetic (cAFM) Chern insulator state.
From: Electric control of a canted-antiferromagnetic Chern insulator
Data is taken from a single gated Device 1. a Reflective circular dichroism (RMCD) signal taken at a temperature of 2 K at Vbg = 0 V. b ρyx, and c, ρxx measurements as a function of magnetic field (μ0H) at optimal gate voltage Vbg = 53 V. RMCD data are acquired at T = 2 K while transport data at T = 50 mK. Green and orange traces correspond to magnetic field sweeping down and up, respectively. The red arrow denotes the spin flop field HC1 and the light blue arrow indicates the critical field HC2 for reaching the field-induced ferromagnetic states. The slight offset of the spin-flop fields between RMCD and transport measurements are due to the different gate voltage and temperature of the measurements. ρyx is antisymmetrized against μ0H while ρxx is symmetrized.
