可调节的磁力在原子薄的旅游反铁磁体中与室温铁磁顺序
Longyu Lu1, Qing Wang2,3, Hengli Duan4,5
1School of Materials Science and Engineering, Anhui University, Hefei 230601, China.
Nano letters
|May 10, 2024
概括
这项研究证明了单层FeCoGeTe片中的内在铁磁性和更厚层中的可调节的反铁磁性,两者都在室温下稳定,用于先进的自旋电子.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 这就是Spintronics.
背景情况:
- 调制自旋配置对于下一代自旋电子是必不可少的.
- 原子薄结构和室温操作是关键的挑战.
研究的目的:
- 为了实现单层片中的内在铁磁性.
- 在 (Fe0.56Co0.44) 5GeTe2.2 中实现可调节的铁磁/反铁磁性.
- 在室温下研究磁性排序和层级依赖现象.
主要方法:
- 一层和几层 (Fe0.56Co0.44) 5GeTe2片的制造.
- 磁性排序的实验研究 (铁磁性和反铁磁性).
- 取决于温度的测量以确定关键排序温度.
主要成果:
- 在单层薄片中实现了内在铁磁性,具有创纪录的高基里温度 (Tc ~310 K).
- 在少数层 (Fe0.56Co0.44) 5GeTe2.2中观察到可调的铁磁/反铁磁.
- 在铁磁性 (≥1L) 和反铁磁性 (≥4L) 状态下,磁性排序可识别到室温.
- 在150 K的A型反铁磁体中观察到奇偶层数效应.
- 在低温下,在均层片中发现强烈的铁磁顺序.
结论:
- 在 (Fe0.56Co0.44) 5GeTe2范德瓦尔斯磁铁中证明了室温铁磁性和可调节的抗铁磁性.
- 这些发现突显了旋转电子学新物理和应用的潜力.
- 磁场,层数和温度的相互作用为探索提供了丰富的现象.
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