Reconstruction of an effective magnon mean free path distribution from spin Seebeck measurements in thin films

Reconstruction of an effective magnon mean free path distribution from spin Seebeck measurements in thin films
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根据薄膜中自旋塞贝克测量重建有效磁振子平均自由程分布

DOI:
10.1088/1367-2630/aa5163
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发表时间:
2017
影响因子:
3.3
通讯作者:
G. Jakob
G. Jakob
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
E. Chavez-Ángel;R. A. Zarate;S. Fuentes;E. J. Guo;M. Kläui;G. Jakob

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深入了解能量载体的平均自由程(MFP)分布对于设计和调整材料的输运性质至关重要。在这方面,一个显着的身体的工作已经调查了声子和电子MFP分布,然而,类似的研究磁振子MFP分布还没有进行到目前为止。在这项工作中,我们使用的厚度依赖性测量的钇铁石榴石薄膜的纵向自旋塞贝克(LSSE)的影响,重建的累积分布的SSE相关的有效磁振子MFP。通过使用(Guo et al 2016 Phys. Rev. X 6 031012)报道的实验数据,我们采用了(Minnich 2012 Phys. Rev. Lett. 109 205901)并将其应用于磁振子。重建结果表明,不同MFP的磁振子对总LSSE的贡献不同,有效磁振子MFP分布远远超出其典型平均值。
A thorough understanding of the mean-free-path (MFP) distribution of the energy carriers is crucial to engineer and tune the transport properties of materials. In this context, a significant body of work has investigated the phonon and electron MFP distribution, however, similar studies of the magnon MFP distribution have not been carried out so far. In this work, we used thickness-dependence measurements of the longitudinal spin Seebeck (LSSE) effect of yttrium iron garnet films to reconstruct the cumulative distribution of a SSE related effective magnon MFP. By using the experimental data reported by (Guo et al 2016 Phys. Rev. X 6 031012), we adapted the phonon MFP reconstruction algorithm proposed by (Minnich 2012 Phys. Rev. Lett. 109 205901) and apply it to magnons. The reconstruction showed that magnons with different MFP contribute in different manner to the total LSSE and the effective magnon MFP distribution spreads far beyond their typical averaged values.
DOI: 10.1103/physrevb.89.024409
发表时间: 2014-01
期刊: Physical Review B
影响因子: 3.7
作者:
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通讯作者: U. Ritzmann;D. Hinzke;U. Nowak
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发表时间: 2015-08-28
影响因子: 8.6
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金属薄膜某些传输系数的尺寸效应
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发表时间: 1972
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