LIONESS - Light-controlled nanomagnetic and spintronic applications via magneto-thermoplasmonics

LIONESS - 通过磁热等离子体的光控纳米磁性和自旋电子应用

• 批准号: MR/X033910/1
• 负责人: Naëmi Leo
• 金额: $ 159.79万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=MR%2FX033910%2F1
• 关键词: LIONESS; Light; controlled; nanomagnetic; spintronic

Major breakthroughs in information technologies over the past 50 years have relied heavily on knowledge of electronic processes, utilisation of magnetic states (such as giant magnetoresistance read heads for hard drives) and usage of lasers (e.g., CDs and fibre optics). Today, information technologies are ubiquitous, allowing us to solve more and more complex computational problems than ever.Nowadays, a key concern is to improve the efficiency of digital devices, coupled with miniaturisation and increased processing speed, as the increase in computational power and data density comes at high costs with respect to energy consumption. This is made worse by the fact that - rather than being used in an effective way - a sizeable fraction of electricity used to drive modern chips gets dissipated as heat, which can have negative effects on device performance and data retention.However, heat itself is not bad, and particularly interesting phenomena potentially useful for future computational devices, occur in situations where the temperature distribution is not uniform, e.g., if one side of a device is hot while its opposite side is cold. In combination with magnetic materials, such heat differentials can be used to (i) generate electricity, (ii) move spin structures that encode information bits, or (iii) enhance unconventional computing schemes by their intrinsic stochasticity. To date, our experimental understanding of these effects, and their effective integration into devices is hampered by the fact that contemporary methods to create heat differentials lack the flexibility to be suitable for miniaturised technological applications, as they are slow and have large spatial extension, can be prone to damage, and - most importantly - are not reconfigurable.Taking inspiration from the field of photonics and functional magnetic materials, here I will implement a hybrid approach for novel magneto-thermoplasmonic devices: The main objective of the Fellowship is to develop a novel experimental platform enabling fast, precise, and reconfigurable optical control of nano- to microscale temperature distributions by light for key magnetic and spintronic applications. Specific aims are to (i) create fast and optically reconfigurable spin current generators, (ii) experimentally quantify the thermally driven motion of spin textures to further our understanding of fundamental phenomena, and (iii) use light as a flexible and high-bandwidth input for unconventional nanomagnetic computation schemes.The research outputs generated with the Fellowship will tackle fundamental questions regarding non-equilibrium behaviour of magnetic materials, and the newly developed magneto-thermoplasmonic platform will generate impact on the areas of spintronics, optically reconfigurable metamaterials, and energy.

在过去的50年中，信息技术的重大突破在很大程度上依赖于电子过程的知识，磁状态的利用（例如，巨型磁磁性读取的头部用于硬盘驱动器）和激光器的使用（例如CDS和光纤选择）。如今，信息技术无处不在，使我们能够比以往任何时候都更加复杂，更复杂的计算问题。现在，关键问题是提高数字设备的效率，再加上小型化和加工速度，随着计算能力和数据的增加而增加的处理速度密度在能源消耗方面高昂。由于 - 不用以有效的方式使用而不是用来驱动现代芯片的大量电力被消散，这可能会对设备性能和数据保留产生负面影响，这使情况变得更糟。还不错，特别有趣的现象可能对未来的计算设备有用，发生在温度分布不均匀的情况下，例如，如果设备的一侧很热，而其相反的一侧很冷。结合磁性材料，此类热差异可用于（i）产生电力，（ii）移动编码信息位的自旋结构，或者（iii）通过其内在的随机性增强了非常规计算方案。迄今为止，我们对这些效果的实验理解及其有效整合到设备中受到了以下事实的阻碍：当代创建热差异的方法缺乏适合小型技术应用的灵活性，因为它们缓慢并且具有很大的空间扩展，可以容易受到伤害，而且 - 最重要的是 - 从光子学和功能磁性材料领域中获取灵感，在这里，我将在这里实施一种用于新型磁性磁性磁性设备的混合方法：研究金的主要目的是发展一个新型实验平台可通过光对纳米温度分布进行快速，精确和可重构的光学控制，用于关键的磁性和自旋应用。具体目的是（i）创建快速，光学地重新配置的自旋电流发生器，（ii）实验量化自旋纹理的热驱动运动，以进一步了解我们对基本现象的理解，（iii）将光作为灵活且高带宽输入对于非常规的纳米磁计算方案。奖学金产生的研究输出将解决有关磁性材料非平衡行为的基本问题，而新开发的磁性磁性平台将对Spintronics的领域产生影响，可很好地重新配置可抗化的Metagronials和能量。