Controlling and integrating 2D magnetism in epitaxial van der Waals heterostructures

控制和集成外延范德华异质结构中的二维磁性

• 批准号: EP/X015556/1
• 负责人: Philip King
• 金额: $ 119.63万
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX015556%2F1
• 关键词: Controlling; integrating; 2D; magnetism; epitaxial

This project seeks to realise the adventurous goal of "designer magnetism", based around the flexibility and functionality offered by 2D magnetic materials. Of fundamental importance in its own right, but also as a platform to create targeted spintronic functionality, interfacing different van der Waals materials and magnets together promises almost limitless possibilities for tuning magnetic interactions and ordering tendencies and for realising new quantum states and phases. We will realise 2D magnetic materials and heterostructures in thin film geometries. This is crucial not only to unlock their potential for device applications, but will also advance new possibilities for epitaxial engineering that are not achievable in other material systems or using exfoliated 2D materials. Our epitaxial and all-vacuum based synthesis and characterisation approach will open new routes to studying the 2D magnetic materials created using advanced spectroscopic tools. Through this, we will gain much-needed fundamental understanding of how the microscopic magnetic interactions and excitations at play in these layered systems become modified in the ultra-thin limit, where the application of traditional magnetic probes such as neutron scattering becomes impossible or impractical. This, in turn, promises to deliver a step change in our fundamental understanding of low-dimensional magnetism, and through this to pave the way for a host of new spintronic and quantum technologies.

该项目旨在实现“设计师磁性”的冒险目标，基于2D磁性材料提供的灵活性和功能性。将不同的货车德瓦耳斯材料和磁体连接在一起，不仅本身具有根本的重要性，而且还作为创建有针对性的自旋电子功能的平台，这为调整磁相互作用和有序趋势以及实现新的量子态和相位提供了几乎无限的可能性。我们将实现二维磁性材料和异质结构的薄膜几何形状。这不仅对于释放它们在器件应用中的潜力至关重要，而且还将为外延工程带来新的可能性，而这在其他材料系统或使用剥离的2D材料中是无法实现的。我们基于外延和全真空的合成和表征方法将为研究使用先进光谱工具创建的2D磁性材料开辟新的途径。通过这一点，我们将获得急需的基本了解，了解这些分层系统中起作用的微观磁相互作用和激发如何在超薄极限下发生改变，在超薄极限下，传统磁探针（例如中子散射）的应用变得不可能或不切实际。反过来，这有望在我们对低维磁性的基本理解方面带来一个飞跃，并通过这一点为许多新的自旋电子和量子技术铺平道路。

项目成果

Electron doping as a handle to increase the Curie temperature in ferrimagnetic Mn 3 Si 2 X 6 (X = Se, Te)

电子掺杂作为提高亚铁磁性 Mn 3 Si 2 X 6 (X = Se, Te) 居里温度的手段

• DOI: 10.1039/d3cp05525f
• 发表时间: 2024
• 期刊: Physical Chemistry Chemical Physics
• 影响因子: 3.3
• 作者: Qiao L