Materials World Network: Magnetization Dynamics in Metallic Ferromagnetic Nanostructures

材料世界网络：金属铁磁纳米结构中的磁化动力学

• 批准号: 221588137
• 负责人: Professor Dr. Sergej O. Demokritov, Ph.D.
• 金额: --
• 依托单位: Institut für Ionenstrahlphysik und Materialforschung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/221588137?language=en
• 关键词: Materials; World; Network; Magnetization; Dynamics

The main goal of the proposed research program is to gain quantitative understanding of the properties of spin waves in individual metallic ferromagnetic nanostructures in the presence of spin currents. Ultimately, the fundamental understanding will contribute to innovation in the emerging field of magnonics – a spinbased energy efficient processing of digital information. We propose a series of experiments that employ several on-chip ferromagnetic resonance techniques as well as near-field Brillouin Light Scattering (BLS) to measure spin wave properties in magnetic nanostructures. These measurements mainly focus on understanding of (i) the effect of geometric confinement on nonlinear spin wave interactions and (ii) the effect of spin currents on spin wave dispersion and damping in ferromagnetic nanowires. We will study these phenomena both experimentally and theoretically, and the proposed program of research is based on both well-established and developing collaborations within the group of PIs and co-PIs of this program (between the University of California, Irvine (UCI), the University of Duisburg-Essen (UDE) and the University of Muenster (WWUM)).

提出的研究计划的主要目标是获得自旋电流存在下单个金属铁磁纳米结构中自旋波特性的定量理解。最终，基本的理解将有助于磁振学新兴领域的创新-一种基于自旋的节能数字信息处理。我们提出了一系列实验，采用几种片上铁磁共振技术以及近场布里渊光散射（BLS）来测量磁性纳米结构中的自旋波特性。这些测量主要集中在理解(i)几何约束对非线性自旋波相互作用的影响和（ii）自旋电流对铁磁纳米线中自旋波色散和阻尼的影响。我们将从实验和理论上研究这些现象，拟议的研究计划是基于在该计划的pi和合作pi（加州大学欧文分校（UCI），杜伊斯堡-埃森大学（UDE）和明斯特大学（WWUM）之间）之间建立和发展的合作。

项目成果

Nanowire spin torque oscillator driven by spin orbit torques

• DOI: 10.1038/ncomms6616
• 发表时间: 2014-12-01
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Duan, Zheng;Smith, Andrew;Krivorotov, Ilya N.
• 通讯作者: Krivorotov, Ilya N.

Spin-wave modes in permalloy/platinum wires and tuning of the mode damping by spin Hall current

• DOI: 10.1103/physrevb.90.024427
• 发表时间: 2014-07-28
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Duan, Zheng;Boone, Carl T.;Lindner, Juergen
• 通讯作者: Lindner, Juergen

Spin wave eigenmodes in transversely magnetized thin film ferromagnetic wires

• DOI: 10.1103/physrevb.92.104424
• 发表时间: 2015-09-21
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Duan, Zheng;Krivorotov, Ilya N.;Lindner, Juergen
• 通讯作者: Lindner, Juergen