大型热电传输在磁合的CRI3/1T-MoS2vdW异构结构中通过旋电荷相互转换
Anil Kumar Singh1, Weibo Gao2, Pritam Deb1
1Department of Physics, Tezpur University (Central University), Tezpur 784028, India.
概括
这项研究将热电 (TE) 和磁性材料整合到二维范德瓦尔斯异构结构中,证明了磁性合的TE特性. 这种磁性近距离效应为TE设备的控制提供了新的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 低维材料对于纳米级热电 (TE) 设备至关重要.
- 在2D中整合TE和磁性材料,可以通过磁性近距离效应对TE特性进行控制.
研究的目的:
- 设计和研究一种德瓦尔斯 (vdW) 异构结构,将1T-MoS2和Cri3结合起来,以获得磁性合的TE特性.
- 探索影响 TE 效应的电子和磁性配置,在这种异构结构中.
主要方法:
- 一个单层CrI3/1T-MoS2 vdW异构结构的计算设计.
- 分析电子带结构,磁性异性质能量和旋转极化.
- 研究与旋转相关的异常Nernst效应和TE性能指标.
主要成果:
- 在CRI3/MoS2异构结构中观察到的奇异电子和磁性配置.
- 显著的磁性近距离效应归因于大的磁性异性质能量 (2.21 meV Cr-1) 和旋转极化 (12.30%).
- 通过磁CRI3层有效控制和调整与旋转相关的异常Nernst效应.
- 在300 K的费米水平附近,高无维值 (∼6) 和功率因子 (∼3.8×10^11 /τ Wm^-1K^-2s^-1) 接近费米水平.
结论:
- 该研究突出了先进的TE设备在VDW异构结构中磁性近距离效应的潜力.
- 强大的相对论旋转轨道合证实了TE特性与磁性配置之间的相关性.
- 这项工作为设计具有增强功能的低维TE设备提供了一条途径.
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