在VOX2 (X = Cl, Br, I) 单层中多重铁的起源
Angel Todorov Apostolov1, Iliana Naumova Apostolova2, Julia Mihailova Wesselinowa3
1University of Architecture Civil Engineering and Geodesy, Hristo Smirnenski Blvd. 1, 1046 Sofia, Bulgaria.
Nanomaterials (Basel, Switzerland)
|March 12, 2024
概括
这项研究探讨了VOX2单层中的多铁性质,揭示了反对称的磁电相互作用驱动了旋转重定向过渡. 这些发现为这些新型材料的磁性排序提供了洞察力.
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
- 量子力学就是量子力学.
背景情况:
- 多铁材料表现出合的铁电和磁顺序,为先进的电子设备提供了潜力.
- VOX2 (X = Cl, Br, I) 单层正在成为多铁应用的有希望的候选者.
研究的目的:
- 研究VOX2单层的多铁特性.
- 阐明控制旋转转向转换的微观机制.
- 探索磁相互作用和Dzyaloshinskii-Moria矢量对铁电性质的影响.
主要方法:
- 利用格林的函数方法来建模VOX2单层的微观行为.
- 分析了铁电参数对磁相互作用的依赖性 (交换,Dzyaloshinskii-Moria).
- 研究了从反铁磁到铁磁状态的旋转顺序过渡.
主要成果:
- 反对称的磁电相互作用被确定为旋转重定向过渡的关键因素,而不会改变磁矩顺序.
- 通过改变b轴交换相互作用的信号来实现铁磁排序,而不会诱导旋转重定向.
- 为磁相互作用对铁电参数的依赖提供了定性解释.
结论:
- 拟议的微观模型成功地解释了VOX2单层中的多铁子行为和旋转重定向过渡.
- 结果与密度函数理论计算的质量一致,验证了模型的预测.
- 该研究提供了对这些材料中旋转重定向转换的机制理解.
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