Generation and amplification of propagating spin waves by spin-orbit torque

自旋轨道扭矩产生和放大传播自旋波

• 批准号: 423113162
• 负责人: Dr. Vladislav Demidov
• 金额: --
• 依托单位: Institut für Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/423113162?language=en
• 关键词: Generation; amplification; propagating; spin; waves

Within the framework of this project, we will study in detail generation and amplification of coherent propagating spin waves in magnetic nanostructures by spin-orbit torque. We will consider different approaches to achieve efficient tunable generation of spin waves and short spin-wave packets with controllable frequency and the wavelength, in nano-systems based on both conductive and insulating magnetic materials. We will also study the possibilities to overcome limitations imposed by the scattering of coherent spin waves from incoherent spin-torque enhanced magnons and achieve true amplification of propagating spin waves by the spin-orbit torque. Finally, we will study complex systems, where active spin-orbit torque devices interact with each other via the exchange of amplified spin waves. The proposed investigations will contribute to the deeper understanding of the effects of spin-orbit torque on the magnetization dynamics and are expected to spur significant advances in spin-orbit torque magnonics.

在本项目框架内，我们将详细研究磁纳米结构中自旋轨道转矩产生和放大相干传播自旋波。我们将考虑在基于导电和绝缘磁性材料的纳米系统中实现频率和波长可控的自旋波和短自旋波包的有效可调产生的不同方法。我们还将研究克服非相干自旋力矩增强磁振子散射相干自旋波所带来的限制的可能性，并通过自旋轨道力矩实现传播自旋波的真正放大。最后，我们将研究复杂系统，其中主动自旋-轨道扭矩装置通过放大自旋波的交换相互作用。这些研究将有助于更深入地了解自旋轨道转矩对磁化动力学的影响，并有望推动自旋轨道转矩磁学的重大进展。