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Strain-Induced Interlayer Magnetic Coupling Spike of the Two-Dimensional van der Waals Material Fe5GeTe2
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-08-18 , DOI: 10.1021/acs.jpcc.3c03788
Wen-Qiang Xie 1, 2 , Chang-Chun He 2 , Xiao-Bao Yang 2 , Yu-Jun Zhao 2 , Wen-Tong Geng 1
Affiliation  

A stronger interlayer magnetic coupling (ILMC) can open up new opportunities in spintronic devices. Numerous publications have demonstrated that ILMC is continuously evolving, even in the context of magnetic phase change. Here, we observe an extraordinary discontinuous transition (ILMC spike) in a two-dimensional (2D) van der Waals (vdW) material, Fe5GeTe2 (F5GT). The ILMC spikes from 1.15 to 12.79 meV/f.u when a 3% in-plane biaxial strain is applied. Additionally, the applied in-plane strain significantly enhances the magnetic anisotropy energy (MAE) of the system, triggering a sharp transition between the in-/off-plane configurations in multilayer F5GT.

中文翻译:

二维范德华材料 Fe5GeTe2 的应变诱导层间磁耦合尖峰

更强的层间磁耦合(ILMC)可以为自旋电子器件带来新的机遇。许多出版物表明,即使在磁相变的背景下,ILMC 也在不断发展。在这里,我们在二维 (2D) 范德华 (vdW) 材料 Fe 5 GeTe 2 (F5GT) 中观察到了非凡的不连续转变(ILMC 尖峰)。当施加 3% 的面内双轴应变时,ILMC 从 1.15 峰值到 12.79 meV/fu。此外,施加的面内应变显着增强了系统的磁各向异性能量 (MAE),从而触发多层 F5GT 中面内/面外配置之间的急剧转变。
更新日期:2023-08-18
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