Fig. 6: Low-field and high-field anomalies in the magneto-optical response of α-RuCl3.
From: Magneto-optical study of metamagnetic transitions in the antiferromagnetic phase of α-RuCl3
a, b Schematic sketch of the temperature-field phase diagram of α-RuCl3 for two directions, {1, 1, 0} (Bab perpendicular to the Ru–Ru bond) and {1, 0, 0} (Bab along the bond). The three different observed regimes I (ZZ), II (SF), and III (ZZ2) are displayed. In regime I, three initial domains are present. More details on each step (1–4) can be found in the main text. After step 2, the most populated domain is depicted for each field direction. For the fields larger than Bsf, the similar spin orientation is shown. Black square and circle symbols are derived from MLD experiments and show the metamagnetic transition fields for different temperatures. White square and circle symbols show the boundary with QPM phase obtained by MLD and MLB experiments, respectively. c High-field anomalies of dθ/dB at different temperatures. The inset shows the jump in the MLD data at 6.2 T. d The proposed model simulates domain population and the spin-flop transition.
