Interplay of large two-magnon ferromagnetic resonance linewidths and low Gilbert damping in Heusler thin films

Interplay of large two-magnon ferromagnetic resonance linewidths and low Gilbert damping in Heusler thin films
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Heusler 薄膜中大二磁振子铁磁共振线宽和低吉尔伯特阻尼的相互作用

DOI:
10.1103/physrevb.101.134430
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发表时间:
2020
期刊:
影响因子:
3.7
通讯作者:
Crowell, P. A.
Crowell, P. A.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Peria, W. K.;Peterson, T. A.;McFadden, A. P.;Qu, T.;Liu, C.;Palmstrøm, C. J.;Crowell, P. A.

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我们报告的宽带铁磁共振线宽测量进行外延Heusler薄膜。一个大的和各向异性的两个磁振子散射线宽展宽的测量与位于膜平面的磁化,而线宽测量与饱和的磁化垂直于样品平面揭示低吉尔伯特阻尼常数,,和,分别。面内测量拟合到结合了吉尔伯特和两个磁振子散射对线宽的贡献的模型,揭示了10-100 nm的特征无序长度尺度。
We report on broadband ferromagnetic resonance linewidth measurements performed on epitaxial Heusler thin films. A large and anisotropic two-magnon scattering linewidth broadening is observed for measurements with the magnetization lying in the film plane, while linewidth measurements with the magnetization saturated perpendicular to the sample plane reveal low Gilbert damping constants of,, andfor,, and, respectively. The in-plane measurements are fit to a model combining Gilbert and two-magnon scattering contributions to the linewidth, revealing a characteristic disorder length scale of 10–100 nm.
DOI: 10.1063/1.4792269
发表时间: 2013-02
影响因子: 4
作者:
H. Kurebayashi;T. Skinner;K. Khazen;K. Olejník;D. Fang;C. Ciccarelli;R. Campion;B. Gallagher
通讯作者: H. Kurebayashi;T. Skinner;K. Khazen;K. Olejník;D. Fang;C. Ciccarelli;R. Campion;B. Gallagher
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发表时间: 2009-04-01
影响因子: 3.2
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发表时间: 2018-05-01
期刊: NATURE PHYSICS
影响因子: 19.6
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通讯作者: Back, C. H.