论文标题
第一原理的2D Van der Waals Ferromagnet CRSBR中的镁克服基质。
Magnon straintronics in the 2D van der Waals ferromagnet CrSBr from first-principles
论文作者
论文摘要
二维（2D）磁铁的最近分离为微型化的极限提供了诱人的Spintronics和Magnonics的机会。原子上薄的材料的关键优势之一是它们出色的变形能力，这为通过应变工程提供了令人兴奋的途径来控制其性质。在此，使用第一原理计算，我们研究了空气稳定的2D磁性半导体CRSBR（$ t_c $ = 146 K）的磁性特性，磁通分散和自旋动力学。我们的结果提供了对竞争相互作用的深度微观分析，该相互作用稳定了单层中的远程铁磁顺序。我们展示了CRSBR的镁动力学可以沿两个主要的晶体学方向选择性地修改，这是应用应变的函数，从而探测了该准1D电子系统的潜力，以用于镁滤器应用。此外，我们预测，考虑到$ T_C $的应变驱动的增强，考虑到环境筛查约为30％，可以在较高温度下传播自旋波。
The recent isolation of two-dimensional (2D) magnets offers tantalizing opportunities for spintronics and magnonics at the limit of miniaturization. One of the key advantages of atomically-thin materials is their outstanding deformation capacity, which provides an exciting avenue to control their properties by strain engineering. Herein, we investigate the magnetic properties, magnon dispersion and spin dynamics of the air-stable 2D magnetic semiconductor CrSBr ($T_C$ = 146 K) under mechanical strain using first-principles calculations. Our results provide a deep microscopic analysis of the competing interactions that stabilize the long-range ferromagnetic order in the monolayer. We showcase that the magnon dynamics of CrSBr can be modified selectively along the two main crystallographic directions as a function of applied strain, probing the potential of this quasi-1D electronic system for magnon straintronics applications. Moreover, we predict a strain-driven enhancement of $T_C$ considering environmental screening by ~30%, allowing the propagation of spin waves at higher temperatures.
