二次元ファンデルワールス反強磁性体におけるスピンダイナミクスの電気的検出

于2022财政年度，申请人继续研究Ag2CrO2的反常霍尔及磁阻效应。改变Ag2CrO2的厚度导致了材料的反常霍尔效应和线性磁阻的强烈依赖性，表明材料的磁性能相对于样品的厚度和质量发生了很大的变化。目前，正在进行进一步的实验来研究这种行为的起源，例如由于自旋波动或受抑自旋系统的自旋结构引起的非本征散射效应。为了研究阻挫自旋对自旋电流的影响，还制备了Ag_2CrO_2的自旋输运器件。虽然一些成功的设备进行了测量，需要进一步的试验，以准确地评估自旋霍尔效应Ag2CrO2。此外，申请人已经开始对PdNi（一种相关的受抑材料）进行电学和自旋输运测量，以便将其电学和自旋输运行为与Ag2CrO2进行比较。进一步的实验正在进行中，以了解自旋流和受抑自旋系统之间的关系。

During the 2022 fiscal year, the applicant has continued the research on the anomalous Hall and magnetoresistance effect of Ag2CrO2. Varying the thickness of Ag2CrO2 has led to a strong dependence of the anomalous Hall effect and linear magnetoresistance of the material, indicating a large change in the magnetic properties of the material with respect to thickness and the quality of the samples. Currently, further experiments are being performed to investigate the origin of such a behavior, such as extrinsic scattering effects due to fluctuations of spins or the spin structure of the frustrated spin system. Spin transport devices of Ag2CrO2 has also been fabricated in order to investigate the effect of frustrated spins on the spin current. Although some successful devices were measured, further trial is required to accurately evaluate the spin Hall effect in Ag2CrO2. Furthermore, the applicant has started to perform electrical and spin transport measurements on PdNi, a related frustrated material, in order to compare its electrical and spin transport behavior to Ag2CrO2. Further experiment is being performed to understand the relation between the spin current and frustrated spin systems.