High-pressure measurements reveal unusual resistance behavior in a van der Waals ferromagnet, indicating electronic state changes.
The pressure-dependent electronic transport and magnetic properties of the van der Waals ferromagnetic metal Fe₃GaTe₂were systematically investigated by high-pressure resistance and magnetoresistance measurements in both in-plane and out-of-plane configurations. At low pressures, the resistances in both directions decrease with increasing pressure. However, above ~ 13 GPa, an anomalous behavior emerges in which the resistance increases upon further compression, with a much stronger pressure dependence observed in the out-of-plane direction. Around 27 GPa, a distinct kink appears in the out-of-plane resistance, accompanied by a pronounced reduction of transport anisotropy. These anomalous transport features are closely correlated with the pressure evolution of magnetoresistance, indicating pressure-induced electronic reconstruction associated with magnetic state evolution. Our results reveal a multistage pressure response in Fe₃GaTe₂and provide insights into the strong coupling between electronic transport and magnetism in layered van der Waals ferromagnets.
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Zhang et al. (2026) studied this question.
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