Experimental Evaluation of 3D Heat Flow Using Magneto‐Thermoelectric Effects in a Ferromagnetic Nanowire
Experimental Evaluation of 3D Heat Flow Using Magneto‐Thermoelectric Effects in a Ferromagnetic Nanowire
复制标题
利用铁磁纳米线中的磁热电效应对 3D 热流进行实验评估
DOI：
10.1002/pssr.202100608
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kimura Takashi
中科院分区：
文献类型：
--
作者：
Kamruzzaman Md;Hu Shaojie;Ohnishi Kohei;Kimura Takashi
本文中，执行在横向配置的纳米自旋电子器件的操作下在铁磁坡莫合金纳米线中感生的磁热电电压的系统测量。它示出的角度依赖性的磁热电信号与各种探头配置可以定量地理解的磁塞贝克和异常能斯特效应的组合。令人惊讶的是，横向磁塞贝克效应的贡献在一定的探针配置中变得显着，表明横向热流的重要性。这些结果使我们能够分析坡莫合金纳米线内部热流的三维分布。目前的演示表明，磁热电效应是一个强大的和可靠的工具，用于分析纳米结构器件中的热分布。
Herein, a systematic measurement of magneto‐thermoelectric voltage induced in a ferromagnetic permalloy nanowire under the operation of a laterally configured nanospintronic device is performed. It is shown that the angular dependences of the magneto‐thermoelectric signals with various probe configurations can be quantitatively understood by the combination of the magneto‐Seebeck and anomalous Nernst effects. Surprisingly, the contribution of the transverse magneto‐Seebeck effect becomes significant in a certain probe configuration, indicating the importance of the transverse heat flow. These results allow us to analyze the 3D distribution of the heat flow inside the permalloy nanowire. The present demonstration indicates that the magneto‐thermoelectric effect is a powerful and reliable tool for analyzing the heat distribution in nanostructured devices.