论文标题
狄拉克乐队中的手性石膏磁力
Chiral Stoner magnetism in Dirac bands
论文作者
论文摘要
表现出具有浆果曲率的乐队中的震撼磁性，这表现出受自旋手性密度密度$ \ vec s \ cdot（\ partial_x \ vec s \ vec s \ times \ times \ partial_y \ vec s）$之间的耦合的深刻影响。关键效果是，在存在自旋纹理的情况下移动的载体将其视为通过旋转依赖性的aharonov-bohm效应与载体轨道运动结合的几何磁场的来源。最近预测，这种新兴的自旋轨道相互作用效应可以使手性镁沿系统边界传播。在这里，我们表明，它还有利于手性旋转纹理，例如Skyrmions（拓扑保护的物体，具有粒子状特性，稳定在基态下。发现石4的不稳定性的阈值可以软化，从而使手性旋转的相位在逼真的条件下可访问。我们对Bernal双层石墨烯的手性效应进行了详细的分析，并讨论了石墨烯多层中Skyrmion纹理的独特特性。
Stoner magnetism in bands endowed with Berry curvature is shown to be profoundly influenced by the coupling between spin chirality density $\vec s\cdot(\partial_x\vec s\times\partial_y\vec s)$ and Berry's orbital magnetization. The key effect is that carriers moving in the presence of a spin texture see it as a source of a geometric magnetic field coupled to the carrier's orbital motion through a spin-dependent Aharonov-Bohm effect. This emergent spin-orbit interaction effect was recently predicted to enable chiral magnons propagating along system boundaries. Here we show that it also favors chiral spin textures such as skyrmions -- the topologically protected objects with particle-like properties, stabilized in the ground state. The threshold for Stoner instability is found to soften, rendering chiral spin-ordered phases accessible under realistic conditions. We present a detailed analysis of the chiral effect for Bernal bilayer graphene and discuss the unique properties of skyrmion textures in graphene multilayers.
