论文标题
部分可观测时空混沌系统的无模型预测
Huge out-of-plane piezoelectric response in ferromagnetic monolayer NiClI
论文作者
论文摘要
在二维（2D）材料中的压电和铁磁（FM）订单的组合，即2D压电铁磁磁性（PFM），可能为新型设备应用提供前所未有的机会。在这里，我们预测平面内FM半导体Janus单层NICLI，其磁各向异性能量（MAE）为1.439 MEV，表现出动态，机械和热稳定性。 NICLI单层具有较大的平板内压电（$ d_ {11} $$ = $ 5.21 pm/v）与$ \ mathrm {mos_2} $相当。此外，NICLI具有巨大的平面压力电离（$ d_ {31} $$ = $ 1.89 pm/v），这对于Ultrathin Pilezoelectric设备应用程序非常需要。事实证明，巨大的平面压电电力与电子相关性具有鲁棒性，这证实了巨大的$ d_ {31} $的可靠性。最后，与NICLI相似，在Niclbr和Nibri的Janus单层中也可以实现具有较大平面外压力电离的PFM，其预测的$ D_ {31} $为0.73 pm/v和1.15 pm/v。预测的巨大的平面压电响应使Janus单层NICLI成为多功能半导体Spintronic应用的良好平台，这也与常规半导体纳米电子设备的底/顶栅极技术兼容。
The combination of piezoelectricity and ferromagnetic (FM) order in a two-dimensional (2D) material, namely 2D piezoelectric ferromagnetism (PFM), may open up unprecedented opportunities for novel device applications. Here, we predict an in-plane FM semiconductor Janus monolayer NiClI with considerably large magnetic anisotropy energy (MAE) of 1.439 meV, exhibiting dynamic, mechanical and thermal stabilities. The NiClI monolayer possesses larger in-plane piezoelectricity ($d_{11}$$=$5.21 pm/V) comparable to that of $\mathrm{MoS_2}$. Furthermore, NiClI has huge out-of-plane piezoelectricity ($d_{31}$$=$1.89 pm/V), which is highly desirable for ultrathin piezoelectric device application. It is proved that huge out-of-plane piezoelectricity is robust against electronic correlation, which confirms reliability of huge $d_{31}$. Finally, being analogous to NiClI, PFM with large out-of-plane piezoelectricity can also be achieved in the Janus monolayers of NiClBr and NiBrI, with the predicted $d_{31}$ of 0.73 pm/V and 1.15 pm/V, respectively. The predicted huge out-of-plane piezoelectric response makes Janus monolayer NiClI a good platform for multifunctional semiconductor spintronic applications, which is also compatible with the bottom/top gate technologies of conventional semiconductor nanoelectronic devices.
