第一原则研究d0磁力在SNI2单层中,由P和As杂质诱导
Pham Minh Tan1, Nguyen Thanh Son2, Duy Khanh Nguyen3,4
1Faculty of Fundamental Sciences, Posts and Telecommunications Institute of Technology Hanoi Vietnam.
RSC advances
|March 9, 2026
概括
合SnI2单层与 pnictogen 原子诱导d0磁性,产生具有可调节性质的磁性半导体. 这项研究为先进的自旋电子和记忆器件铺平了道路.
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
- 量子化学 是一个量子化学.
背景情况:
- 二维 (2D) 材料对于下一代自旋电子技术至关重要.
- 在二维材料中发现d0磁性是一个关键的研究领域.
- SnI2单层是一种非磁性半导体,具有房地产工程的潜力.
研究的目的:
- 为了研究d0磁性的诱导在SnI2单层通过pnictogen兴奋剂.
- 为了探索pnictogen (P和As) 兴奋剂对SnI2.2电子和磁性特性的影响.
- 了解杂质分离在控制磁性和异构性行为中的作用.
主要方法:
- 运用第一原则计算来模拟化物杂的SnI2单层.
- 密度函数理论 (DFT) 用于分析电子带结构和磁性特性.
- 根据间杂质距离,研究了旋转合和磁性异构性.
主要成果:
- 单个基因原子的兴奋剂会诱导磁矩 (2.00μB) 和磁半导体行为.
- 在很小的原子间距离上观察到反铁磁半导体行为.
- 增加杂质分离导致铁磁半金属性或半导体状态,其基里温度高 (As高达462.66 K).
- 观察到可调节的磁性异构性,从垂直磁性异构性 (PMA) 过渡到平面内磁性异构性 (IMA).
结论:
- 普尼克托根兴奋剂是一种有效的策略,可以在SnI2单层中诱导d0磁性.
- 电子和磁性特性,包括磁性排序和异质性,可以通过调整剂原子之间的距离来精确控制.
- 这些发现表明,在磁场传感和磁定型随机访问存储器 (MRAM) 中有潜在的应用.
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