论文标题
在抗磁磁性近端二分法中的可逆边缘旋转电流
Reversible edge spin currents in antiferromagnetically proximitized dichalcogenides
论文作者
论文摘要
我们探索对沉积在抗铁磁（AFM）绝缘底物上的过渡金属二甲藻元素丝带的接近作用。我们使用紧密结合模型对这些混合异质结构进行建模，该模型结合了与AFM材料近端引起的交换和Rashba田地。强大的边缘指出，分散在二分法中的Midgap中受到反映底物中不同AFM排序的诱导交换场的强烈影响。这导致了锯齿形丝带边缘的状态的增强的自旋轨道耦合效应和复杂的自旋投影含量。在MIDGAP范围内移动费米水平的门控系统还显示在这些边缘上显示自旋极化电流。沿边缘的反平行交换场导致旋转电流可以用所施加的场逆转极化。这些混合结构的附加功能可以提供自旋设备和多功能平台，以进一步利用各种材料系统中的接近效应。
We explore proximity effects on transition metal dichalcogenide ribbons deposited on antiferromagnetic (AFM) insulating substrates. We model these hybrid heterostructures using a tight-binding model that incorporates exchange and Rashba fields induced by proximity to the AFM material. The robust edge states that disperse in the midgap of the dichalcogenide are strongly affected by induced exchange fields that reflect different AFM ordering in the substrate. This results in enhanced spin-orbit coupling effects and complex spin projection content for states on zigzag ribbon edges. Gated systems that shift the Fermi level in the midgap range are also shown to exhibit spin polarized currents on these edges. Antiparallel exchange fields along the edge results in spin currents that can reverse polarization with the applied field. The added functionality of these hybrid structures can provide spintronic devices and versatile platforms to further exploit proximity effects in diverse material systems.
