Spin-resolved electronic structure imaging and microscopy

自旋分辨电子结构成像和显微镜

• 批准号: EP/R025169/1
• 负责人: Philip King
• 金额: $ 180.95万
• 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: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR025169%2F1
• 关键词: Spin; resolved; electronic; structure; imaging

Understanding the electronic properties of advanced materials is key to enabling and improving a myriad of practical applications. Angle-resolved photoemission spectroscopy is one of the most powerful probes of their low-energy electronic excitations, which ultimately govern the physical properties of solids. As such, it provides key fundamental insights on the novel states and phases found in complex material systems, as well as on their potential for technology. Combining the latest developments in detector technology, laser light sources, and electron scattering for spin polarimetry, we will create a unique and powerful system that not only enables high-resolution and microscopic-focus angle-resolved spectroscopy from a range of challenging materials systems and environments, but also provides the only UK capability for spin-resolved electronic structure imaging. This promises transformative advances in our understanding of the electronic structure of materials, and in particular their spin-dependent properties, laying the framework for applications ranging from solar cells to spintronic and quantum technologies. It will advance a new form of microscopy, where detailed spectral properties provide a unique contrast mechanism for imaging, and will open new routes to study prototype devices in operando, complementing capabilities of key national facilities. It will leverage existing expertise and facilities within the Centre for Designer Quantum Materials in St Andrews, providing critical feedback to enable the targeted design of quantum, spintronic, magnetic, and electronic materials and devices, and will support a wide user base from across the UK, underpinning a broad array of research areas ranging from catalysis to two-dimensional and topological materials.

了解先进材料的电子特性是实现和改进无数实际应用的关键。角分辨光电子能谱是研究低能电子激发的最有力的探针之一，低能电子激发最终决定了固体的物理性质。因此，它提供了关于复杂材料系统中发现的新状态和相的关键基本见解，以及它们的技术潜力。结合探测器技术，激光光源和电子散射的最新发展，我们将创建一个独特而强大的系统，不仅能够从一系列具有挑战性的材料系统和环境中实现高分辨率和显微镜聚焦角分辨光谱，而且还提供了英国唯一的自旋分辨电子结构成像能力。这有望在我们对材料电子结构的理解方面取得变革性进展，特别是它们的自旋相关性质，为从太阳能电池到自旋电子和量子技术的应用奠定框架。它将推进一种新形式的显微镜，其中详细的光谱特性为成像提供了独特的对比机制，并将开辟新的路线来研究操作中的原型设备，补充国家关键设施的能力。它将利用圣安德鲁斯设计师量子材料中心现有的专业知识和设施，提供关键反馈，以实现量子，自旋电子，磁性和电子材料和设备的有针对性的设计，并将支持来自英国各地的广泛用户群，支持从催化到二维和拓扑材料的广泛研究领域。