在MnTe2中的磁性异构的多铁调与Li/Na吸附的单层
Lijing Luo1, Qilong Sun1, Cui Jin1
1School of Science, Shandong Jianzhu University, Jinan 250101, China.
The journal of physical chemistry letters
|December 2, 2024
概括
研究人员利用金属吸附和铁电效应在二维材料中调整了磁性异性质能量. 这种操纵是开发具有较低能耗的先进自旋电子设备的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 这就是Spintronics.
背景情况:
- 由于其独特的特性,二维 (2D) 磁性材料为下一代自旋电子设备提供了潜在的潜力.
- 可调节的磁性异构能量 (MAE) 对于控制这些材料中的磁性至关重要,用于需要低能耗和高数据存储密度的应用.
研究的目的:
- 展示一种操纵磁性异构性能量 (MAE) 在分层二化 (MnTe2) 中的实际方法.
- 探索金属吸附和铁电 (FE) 偏振对MnTe2中MAE和铁磁 (FM) 合稳定的影响.
- 调查接口工程在定制2D材料的磁性特性的作用,用于自旋电子应用.
主要方法:
- 密度函数理论 (DFT) 的计算被用来研究MnTe的电子和磁性.
- 进行模拟来研究 (Li) 和 (Na) 吸附对MAE的影响.
- 分析了铁电印化物 (In2Se3) 基板对MAE和垂直磁性异构 (PMA) 的影响.
- 研究了外部应变和铁电切换对MAE的影响.
主要成果:
- 在Li/Na吸附下观察到巨大的MAE值达到-12.428 erg/cm2,导致旋转重定位和增强FM合稳定性.
- 阴性MAE在应对外部应变时表现出线性增强.
- 在FE In2Se3基底显著增强了MnTe2的PMA,达到2.318 erg/cm2,这取决于极化方向.
- 在接口上的铁电切换引发了大量的MAE变化 (3.838 erg/cm2).
- 在MAE的调制主要与 Te-derived p-states界面电子占用率的变化有关,影响了旋转轨道合 (SOC).
结论:
- 接口工程提供了一条有效的途径,可以在2D材料中量身定制磁性,例如MnTe2.
- 金属吸附和铁电基板为控制MAE和PMA提供了有希望的策略.
- 这些发现为开发具有增强功能和能源效率的先进自旋电子设备铺平了道路.
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