Spin Dynamics and Damping in Ferromagnetic Thin Films and Nanostructures
Spin Dynamics and Damping in Ferromagnetic Thin Films and Nanostructures
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铁磁薄膜和纳米结构中的自旋动力学和阻尼
DOI：
10.1007/978-3-319-66296-1
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Sinha
中科院分区：
文献类型：
--
作者：
A. Barman;J. Sinha
本书介绍了自旋动力学和磁阻尼领域的最新发展。重要的是要了解铁磁薄膜和纳米结构中控制自旋动力学的基本物理现象沿着在数据存储，存储器和通信技术中的应用潜力。控制自旋动力学的关键参数之一是磁阻尼。这本书开始介绍自旋动力学与量子力学方法的角度。随后介绍了描述磁化动力学的唯象Landau-Lifshitz-吉尔伯特（LLG）方程以及吉尔伯特阻尼出现的位置。讨论了阻尼的起源和机制（如内在和外在，局部和非局部）。现有的理论模型，如呼吸费米面模型，sd-交换弛豫模型，自旋翻转散射沿着与他们的局限性，在描述最近的结果，包括在合理的细节。这些描述包括广泛的读者，包括研究生。我们讨论了重要的实验技术研究磁化动力学从基本水平。沿着讨论了材料参数的影响，以及磁化动力学的电学和光学控制。这本书的主要亮点是控制铁磁薄膜和纳米结构阻尼的新实验方法。着重讨论了金属铁磁体/非磁性金属双层膜的阻尼控制机理，并考虑了其在自旋电子学器件中的应用。描述了调节阻尼的各种方式，具体地，铁磁层/重金属层中的动态（使用来自自旋霍尔效应的自旋电流）和静态控制（界面混合）。在阻尼调制的研究中，讨论了时间分辨磁光克尔效应显微镜和布里渊光散射技术等全光检测技术，特别强调了实现这些技术的优点。具体地，已经详细描述了Pt/Ni 81 Fe 19双层堆叠的实验结果。一种新的方法估计自旋霍尔角使用全光检测技术被证明是更合适的，因为它排除了几个来源的误差，目前在电气检测技术。此外，结果V
This book presents the recent development in the area of spin dynamics and magnetic damping. It is important to understand the basic physical phenomena that govern the spin dynamics in the ferromagnetic thin films and nanostructures along with its application potential in data storage, memory, and communication technology. One of the crucial parameters that govern the spin dynamics is magnetic damping. The book begins with introducing spin dynamics with a perspective of quantum mechanical approach. The phenomenological Landau–Lifshitz–Gilbert (LLG) equation describing magnetization dynamics and also where the Gilbert damping appears is introduced subsequently. Discussion about the origin and mechanism (eg, intrinsic and extrinsic, local and non-local) of damping is included. Existing theoretical models, eg, breathing Fermi surface model, sd-exchange relaxation model, spin-flip scattering along with their limitations in describing recent results are covered in reasonable detail. These descriptions are included for broad range of readers including graduate students. We have discussed the important experimental techniques for investigating magnetization dynamics starting from elementary level. Effect of material parameter, and electrical and optical control of magnetization dynamics are discussed along with recent development in this field of research. The main highlights of the book are new experimental approaches for controlling damping in ferromagnetic thin films and nanostructures. The mechanism for the damping control in metallic ferromagnet/non-magnetic metal bilayer film is given emphasis keeping in mind its usefulness in spintronics-based devices. Various ways to tune the damping, specifically, dynamic (using spin current from spin Hall effect) and static control (interface intermixing) in ferromagnetic layer/heavy metal layer are described. For the investigation of modulation of damping, all-optical detection techniques, for example, time-resolved magneto-optical Kerr effect microscope and Brillouin light scattering technique, are discussed, in particular giving emphasis to the advantages of implementing them. Specifically, experimental results for Pt/Ni81Fe19 bilayer stack have been described in detail. A new method for estimation of spin Hall angle using all-optical detection technique is shown to be more appropriate as it excludes several sources of error that are present in electrical detection techniques. Furthermore, the results v
影响因子：
8.6
作者：
Turgut, Emrah;La-o-Vorakiat, Chan;Mathias, Stefan
通讯作者：
Mathias, Stefan