周期性驱动磁性材料中配体介导的交换相互作用的控制
Controlling ligand-mediated exchange interactions in periodically driven magnetic materials
摘要：
周期性驱动可以改变磁性材料中的有效交换相互作用。在这里，我们探讨如何交换途径影响有效的相互作用的周期性驱动的磁性材料。为了将Floquet工程方法应用于二维磁性材料，我们考虑了现实的模型，并讨论了周期性驱动对配体介导的交换相互作用的影响。我们表明，根据键角和参与交换过程中的配体离子的数量，驱动引起的变化可以是非常不同的那些计算从直接跳跃模型考虑较早。我们研究了这些效应，发现配体离子的存在必须考虑在内，特别是对于TMTCs，其中配体离子介导的相邻相互作用在确定系统的磁性基态中起着至关重要的作用。
英文摘要：
A periodic drive could alter the effective exchange interactions in magnetic materials. Here, we explore how exchange pathways affect the effective interactions of periodically driven magnetic materials. Aiming to apply Floquet engineering methods to two-dimensional magnetic materials, we consider realistic models and discuss the effect of a periodic drive on ligand-mediated exchange interactions. We show that depending on bond angles and the number of ligand ions involved in the exchange process, drive-induced changes can be very different from those calculated from direct-hopping models considered earlier. We study these effects and find that the presence of ligand ions must be taken into account, especially for TMTCs where ligand ion mediated next-neighbor interactions play a crucial role in determining the magnetic ground state of the system.
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