论文标题
用扫描热探针进行局部自旋Seebeck成像
Local spin Seebeck imaging with scanning thermal probe
论文作者
论文摘要
在这项工作中，我们介绍了一个实验的结果，以局部解决高质量的PT/YIG样品中的自旋seebeck效应。我们通过使用局部加热的扫描热探针来生成高度局部的非平衡自旋电流来实现这一目标。为了支持我们的实验结果，我们还提出了一个基于非平衡热力学方法的模型，该模型与实验发现非常吻合。为了进一步证实我们的结果，我们将局部分辨的自旋Seebeck效应与MFM局部磁性纹理索引，并相关相应的区域。我们假设该技术允许对磁化扩散长度内的磁化纹理进行成像，从而表征纳米级旋转热量材料的表征。
In this work we present the results of an experiment to locally resolve the spin Seebeck effect in a high-quality Pt/YIG sample. We achieve this by employing a locally heated scanning thermal probe to generate a highly local non-equilibrium spin current. To support our experimental results, we also present a model based on the non-equilibrium thermodynamic approach which is in a good agreement with experimental findings. To further corroborate our results, we index the locally resolved spin Seebeck effect with that of the local magnetisation texture by MFM and correlate corresponding regions. We hypothesise that this technique allows imaging of magnetisation textures within the magnon diffusion length and hence characterisation of spin caloritronic materials at the nanoscale.
