Valleytronics公司
反铁磁性
凝聚态物理
铁磁性
极化(电化学)
自旋极化
单层
物理
六方晶系
自旋(空气动力学)
材料科学
化学
自旋电子学
纳米技术
结晶学
量子力学
热力学
电子
物理化学
作者
Yushuo Xu,H. Liu,Ying Dai,Baibiao Huang,Wei Wei
摘要
In the current stage, valley-contrasting physics is mainly rooted in nonmagnetic and/or ferromagnetic hexagonal lattices and is rarely used to observe the simultaneous spin and valley polarization in antiferromagnetic materials. In this work, we propose a general scheme that can be achieved easily in experiments to break the PT joint symmetry of antiferromagnetic structures, that is, introducing an out-of-plane potential gradient to realize spin–valley splitting and spontaneous valley polarization. In combination of the model analysis and first-principles calculations, we translate the concept into Mn2P2X3Y3 monolayers and clarify the valley-related physics. It is obvious that our finding significantly extends the scope of valleytronics in both theory and experiments.
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