论文标题
对角线和非对角线热传导，带共振的声子散射$ ni_3teo_6 $
Diagonal and off-diagonal thermal conduction with resonant phonon scattering in $Ni_3TeO_6$
论文作者
论文摘要
声子和磁子之间的耦合在磁性材料中无处不在，并且在磁性特性的许多方面起着至关重要的作用，最著名的是旋转型。然而，这个学术和技术上有趣的问题仍然对某些材料中的问题的一般理解构成了严重的挑战。我们报告说，Ni3Teo6在纵向热导率（$κ_{xx} $）和热霍尔系数（$κ__{xy} $）中都表现出明确的镁音波耦合的明确证据。 Debye-Callaway模型是对声子热传导的现象学描述，可以解释$κ_{XX}}（H）$的测量磁场依赖性：磁子在顺磁相中的自旋波动中的散射以及由于少量的磁通偶联而导致的少量散射。我们进一步建议可以采用类似的方法来了解$ ni_3teo_6 $中的有限$κ_{xy} $ value。
The coupling between phonon and magnon is ubiquitous in magnetic materials and plays a crucial role in many aspects of magnetic properties, most notably in spintronics. Yet, this academically and technologically interesting problem still poses a severe challenge to a general understanding of the issue in certain materials. We report that Ni3TeO6 exhibits clear evidence of significant magnon-phonon coupling in both longitudinal thermal conductivity ($κ_{xx}$) and thermal Hall coefficient ($κ_{xy}$). The Debye-Callaway model, a phenomenological description for phonon heat conduction, can explain the measured magnetic field dependence of $κ_{xx}(H)$: phonon scattering from spin fluctuation in the paramagnetic phase and additional scattering due to magnon-phonon coupling in the collinear antiferromagnetic phase. We further suggest that a similar approach could be applied to understand the finite $κ_{xy}$ values in $Ni_3TeO_6$.
