All-optical characterisation of the spintronic Heusler compound Co2Mn0.6Fe0.4Si
All-optical characterisation of the spintronic Heusler compound Co2Mn0.6Fe0.4Si
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自旋电子赫斯勒化合物Co2Mn0 6Fe0 4Si的全光学表征
DOI：
10.1088/0022-3727/48/16/164015
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
B. Hillebrands
中科院分区：
文献类型：
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作者：
T. Sebastian;Y. Kawada;B. Obry;T. Brächer;P. Pirro;D. A. Bozhko;A. A Serga;H. Naganuma;M. Oogane;Y. Ando;B. Hillebrands
本文致力于通过布里渊光散射光谱评估Heusler化合物Co 2 Mn 0.6 Fe 0.4 Si的材料参数。近年来，钴基Heusler化合物，特别是Co 2 Mn 0.6 Fe 0.4 Si化合物在自旋电子学和磁振子自旋电子学领域引起了极大的兴趣。因此，评估控制千兆赫范围内自旋动力学的材料参数对于开发和理解先进的实验场景以及潜在的技术应用至关重要。我们演示了基于波矢量以及时间分辨布里渊光散射光谱对这些参数的评估。我们研究的重点是确定单个微观结构中的自旋波阻尼以及 Co 2 Mn 0.6 Fe 0.4 Si 参数的交换常数，这些参数很难用替代技术进行估计。
This article is devoted to the evaluation of the material parameters of the Heusler compound Co 2 Mn 0.6 Fe 0.4 Si via Brillouin light scattering spectroscopy. Recently, cobalt-based Heusler compounds and, in particular, the compound Co 2 Mn 0.6 Fe 0.4 Si have attracted huge interest in the fields of spintronics and magnon spintronics. Thus, evaluation of the material parameters that govern spin dynamics in the gigahertz regime is essential to develop and understand advanced experimental scenarios as well as potential technical applications. We demonstrate the evaluation of these parameters based on wavevector as well as time-resolved Brillouin light scattering spectroscopy. The focus of our study is the determination of the spin-wave damping in an individual microstructure as wells as of the exchange constant of Co 2 Mn 0.6 Fe 0.4 Si—parameters, that are difficult to estimate with alternative techniques.