Damping of Magnetization Dynamics by Phonon Pumping.

Damping of Magnetization Dynamics by Phonon Pumping.
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声子泵浦磁化动力学的阻尼。

DOI:
10.1103/physrevlett.121.027202
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发表时间:
2018
影响因子:
8.6
通讯作者:
G. Bauer
G. Bauer
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
S. Streib;Hedyeh Keshtgar;G. Bauer

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本文从理论上研究了磁性薄膜在磁接触中的声子抽运。由于能量和角动量的损失而引起的增强的阻尼示出了作为谐振频率和磁膜厚度的函数的干涉图案,这不能用粘性(“吉尔伯特”)阻尼来描述。声子泵浦取决于磁化方向以及几何和材料参数,并且是可观察的,例如,在厚的电介质衬底上的钇铁石榴石薄膜中。
We theoretically investigate pumping of phonons by the dynamics of a magnetic film into a nonmagnetic contact. The enhanced damping due to the loss of energy and angular momentum shows interference patterns as a function of the resonance frequency and magnetic film thickness that cannot be described by viscous ("Gilbert") damping. The phonon pumping depends on the magnetization direction as well as geometrical and material parameters and is observable, e.g., in thin films of yttrium iron garnet on a thick dielectric substrate.
DOI: 10.1103/physrevlett.108.176601
发表时间: 2012-04-23
影响因子: 8.6
作者:
Weiler, M.;Huebl, H.;Goennenwein, S. T. B.
通讯作者: Goennenwein, S. T. B.
DOI: 10.1103/physrevb.86.134415
发表时间: 2012-10-17
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Dreher, L.;Weiler, M.;Goennenwein, S. T. B.
通讯作者: Goennenwein, S. T. B.