在2D反铁磁半导体FePS3中磁顺序转换的电气控制3
Mengjuan Mi1, Qing Zhang2, Shilei Wang3
1School of Integrated Circuits, Shandong Technology Center of Nanodevices and Integration, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 25, 2025
概括
电子兴奋剂可逆地将2D FePS3从抗铁磁转变为铁磁,反之. 这种通过载体度调整磁顺序,是旋转电子器件应用的关键.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 控制二维材料中的磁性顺序对于自旋电子设备至关重要.
- 载体度调制是一种有效的调整磁性特性的方法.
研究的目的:
- 通过电子兴奋剂研究2D FePS3中的磁性基态转换.
- 探索2D材料中电气控制磁性的潜力.
主要方法:
- 有机阴离子的互,以实现FePS3.3的电子兴奋剂.
- 磁性属性的实验性表征 (库里温度,异性质,歇斯底里).
- 理论计算 (密度函数理论) 以了解电子结构和磁性排序.
主要成果:
- 在FePS3中通过受控的电子兴奋剂实现了可逆反铁磁 (AFM) 到铁磁 (FIM) 到AFM的转换.
- FIM阶段表现出 ~110 K 的基里温度和强大的外平面磁性异构性.
- 在FIM阶段观察到一个异常的温度依赖的磁性歇斯底里循环.
- 理论计算证实了磁性秩序的兴奋剂度依赖性 (FIM在0.3-0.9电子/细胞,AFM在>=1.0电子/细胞).
结论:
- 电子兴奋剂提供了一种有效的途径,可以在FePS3.3等二维材料中设计磁性.
- 观察到的AFM-FIM-AFM过渡是由Stoner和超级交换互动之间的竞争驱动的.
- 演示了电气控制磁状态的途径,用于未来的自旋电子应用.
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