Fig. 2: Spin-flop transition in multilayer NiPS3 probed via in-plane MR.
From: Nature of 2D XY antiferromagnetism in a van der Waals monolayer
a Low-temperature photoluminescence (PL) spectrum of 6 L NiPS3 displaying a sharp emission at E = 1.476 eV. The inset shows the device image with the optical excitation area (black empty circle). The scale bar is 4 μm. b PL intensity as a function of the angular position (θ) of the detector linear polarizer. PL is linearly polarized along the crystal edge (see inset in a), which is the orientation of its L. c In-plane MR with B//L as a function of temperature measured at VSD = 4 V and VBG = 80 V. The data are shown with vertical offsets for clarity. d Magnetic phase diagram of 6 L NiPS3 (I: paramagnetic phase, II: collinear AFM phase, III: spin-flop phase). TN = 149 K (white dash line) remains the same with in-plane magnetic field strength up to 12 T. e Comparison between the estimated spin-flop field and the inverse square root of in-plane magnetic susceptibility anisotropy of bulk NiPS3 as a function of temperature. The susceptibility data are taken from a reference17.
