照片诱导的超快相变在双层CRI中3
Xiaopeng Liu1, Dominik Legut2,3, Qianfan Zhang1
1School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China.
The journal of physical chemistry letters
|August 22, 2023
概括
超快速光刺激通过诱导电子 - 声子相互作用来切换双层CRI (BLC) 中的磁态. 这种方法使铁磁状态转变为反铁磁状态,这对于磁相工程至关重要.
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
- 量子磁力 量子磁力 量子磁力 量子磁力
背景情况:
- 二维磁铁提供了新的磁性切换机制.
- 双层CRI3 (BLC) 具有堆叠依赖的磁性特性,非常适合研究相位过渡.
研究的目的:
- 为了研究BLC中超快光刺激诱导的磁性相位过渡.
- 阐明电子 - 声子相互作用在这种过渡中的作用.
- 为了探索光诱导磁态逆转的潜力.
主要方法:
- 使用了时间依赖密度函数理论 (TD-DFT).
- 分析电子 - 声波合和声波模式激活.
主要成果:
- 光刺激会诱导从R堆叠到M堆叠的BLC的相位过渡.
- 电子-声相互作用,特别是激活的A和B声模式,驱动了过渡.
- 过渡涉及层间旋转相互作用的反转,从铁磁转向反铁磁.
结论:
- 超快速光刺激是一种可行的低功耗,高速的方法,用于在BLC中切换磁状态.
- 电子 - 声子相互作用是控制磁相转换的关键.
- 这项研究对开发先进的磁相工程策略具有重大意义.
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