We report the modulation of electrical properties of charge-ordered YbFe₂O₄ films using electrostatic carrier doping. By utilizing the current switching effect under a high DC electric field as a probe, we detected the charge-ordered phase in the c-axis-oriented YbFe₂O₄ films grown by pulsed-laser deposition. A three-terminal electric double-layer device with a thin channel of YbFe₂O₄ and an ionic liquid (IL) gate dielectric showed reversible modulation of channel conductance under a positive gate voltage. Furthermore, we demonstrated that conductance modulation could be enhanced by customizing the molecular structure of the IL.

中文翻译：

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使用离子液体对电荷有序 YbFe2O4 薄膜进行静电载流子掺杂

我们报告了使用静电载流子掺杂对电荷有序 YbFe ₂ O ₄薄膜的电性能的调制。通过利用高直流电场下的电流开关效应作为探针，我们检测到通过脉冲激光沉积生长的c轴取向 YbFe ₂ O ₄薄膜中的电荷有序相。具有 YbFe ₂ O ₄薄通道和离子液体 (IL) 栅极电介质的三端双电层器件在正栅极电压下显示出通道电导的可逆调制。此外，我们证明了可以通过定制 IL 的分子结构来增强电导调节。