Magnon-polaron transport in magnetic insulators

Magnon-polaron transport in magnetic insulators
复制标题

磁绝缘体中的磁振子极化子输运

DOI:
10.1103/physrevb.95.144420
复制
发表时间:
2017
期刊:
影响因子:
3.7
通讯作者:
G.E.W. Bauer
G.E.W. Bauer
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
B. Flebus;K. Shen;T. Kikkawa;K. Uchida;Z. Qiu;E. Saitoh;R.A. Duine;G.E.W. Bauer

文献摘要

参考文献

被引文献

相似文献

从理论上研究了强磁弹耦合对磁性绝缘体输运性质的影响。我们发展了一个玻尔兹曼输运理论的混合磁振子-声子模式(“磁振子极化子”),并确定输运系数和自旋扩散长度。当磁子系统和弹性子系统中的无序散射足够不同时,磁振子极化子的形成会导致磁场的异常特征和自旋塞贝克效应的温度依赖性。Kikkawa的实验数据[Phys. Rev. Lett. 117,207203(2016)PRLTA 00031 -900710.1103/PhysRevLett.117.207203]中描述的,可以通过比材料的磁性质量好得多的声学质量来解释。我们预测在自旋和热传导和非局域自旋输运实验中类似的异常特征。
We theoretically study the effects of strong magnetoelastic coupling on the transport properties of magnetic insulators. We develop a Boltzmann transport theory for the mixed magnon-phonon modes (“magnon polarons”) and determine transport coefficients and the spin diffusion length. Magnon-polaron formation causes anomalous features in the magnetic field and temperature dependence of the spin Seebeck effect when the disorder scattering in the magnetic and elastic subsystems is sufficiently different. Experimental data by Kikkawa [Phys. Rev. Lett. 117, 207203 (2016)PRLTAO0031-900710.1103/PhysRevLett.117.207203] on yttrium iron garnet films can be explained by an acoustic quality that is much better than the magnetic quality of the material. We predict similar anomalous features in the spin and heat conductivity and nonlocal spin transport experiments.
代尔夫特理工大学磁绝缘体中的磁子极化子输运
DOI: --
发表时间: 2017
期刊:
影响因子: --
作者:
B. Flebus;K. Shen;T. Kikkawa;K. Uchida;Z. Qiu;E. Saitoh;R. Duine;G. Bauer
通讯作者: G. Bauer