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arXiv 2005.08539cond-mat.mes-hall
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扫描热探针局域自旋Seebeck成像

Local spin Seebeck imaging with scanning thermal probe

Alessandro Sola, Vittorio Basso, Massimo Pasquale, Carsten Dubs, Craig Barton, Olga Kazakowa

摘要:

在这项工作中,我们提出了一个实验的结果,以本地解决自旋Seebeck效应在高品质的Pt/YIG样品。我们通过采用局部加热的扫描热探针来产生高度局部非平衡的自旋电流来实现这一点。为了支持我们的实验结果,我们还提出了一个模型的基础上的非平衡热力学方法,这是在一个很好的协议与实验结果。为了进一步证实我们的结果,我们指数的局部解决自旋Seebeck效应与MFM的局部磁化织构和相关的相应区域。我们假设,这种技术可以成像的磁振子扩散长度内的磁化纹理,因此表征自旋热电子材料在纳米级。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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