According to the Stoner criterion, the density of states at the Fermi level is the crucial factor for the magnetic proximity effect (MPE), implying that the MPE controlled by applying a gate voltage. In this report, we examined the anomalous Hall effect (AHE) in a Pt layer with a small magnetic moment induced by the MPE, and the effect of the gate voltage. We observed a large AHE in CoFe2O4/Pt that could be attributed to the magnetism in Pt induced by the MPE. The AHE magnitude was remarkably changed by −50% to +100% by ion gating.

中文翻译：

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通过离子门控控制CoFe ₂ O ₄ /Pt 中的磁邻近效应和反常霍尔效应

根据斯通纳准则，费米能级的态密度是磁邻近效应 (MPE) 的关键因素，这意味着 MPE 是通过施加栅极电压来控制的。在本报告中，我们研究了 MPE 感应的具有小磁矩的 Pt 层中的异常霍尔效应 (AHE)，以及栅极电压的影响。我们观察到 CoFe2O4/Pt 中的大 AHE，这可能归因于 MPE 诱导的 Pt 中的磁性。通过离子门控，AHE 幅度显着改变了 -50% 到 +100%。