Dataset for "Electrothermal manipulation of current-induced phase transitions in ferrimagnetic Mn3Si2Te6"

Abstract Phase transitions driven by external parameters are fundamental to condensed matter physics, providing critical insights into symmetry breaking and emergent phenomena. Recently, ferrimagnetic (FiM) Mn3Si2Te6 has attracted considerable attention for its magnetic-field-induced insulator-metal transitions (IMTs) and currentdriven phase transitions, but the role of applied currents in the magnetic phase remains poorly understood. Here, we employ local magnetization probes and time-resolved transport measurements to investigate the currentinduced phase transitions. Magnetic force microscopy (MFM) with controlled current flow reveals the evolution of ferrimagnetic domains and a first-order-like magnetic phase transition with an abrupt voltage jump. The measurements with rectangular pulsed currents reveal that the time evolution of resistance closely mirrors the resistance-temperature profile, highlighting the role of heat accumulation and a positive feedback mechanism in the current-induced phase transitions. Furthermore, we demonstrate that the intrinsic current-voltage characteristics adhere to Ohm’s law, displaying linearity across various magnetic fields and temperatures. Our work advocates for a cautious approach in distinguishing between genuine current-induced nonequilibrium quantum states and thermal effects.