论文标题
绝热诱导的轨道磁化
Adiabatically Induced Orbital Magnetization
论文作者
论文摘要
提出了由于Bloch电子状态的绝热发展而引起的轨道磁化的半经典理论。它通过揭示这两种现象是诱导的磁化强度是规范不变的唯一实例，从而为周期进化的泵送轨道磁化和轨道磁反应提供了统一的理论。该理论还解释了电场引起的二维金属和Chern绝缘子的内在轨道磁化。我们说明了基于蜂窝状晶状体的玩具模型中的微型原子的微观局部旋转泵送的轨道磁化，该轨道磁化强度与具有角动量的声子模式相对应，并且结果与通过强的Rashba旋转轨道耦合的泵送自旋磁化相当。我们还展示了轨道磁电力在验证内在的非线性异常霍尔和ettingshausen效应之间的莫特关系中的至关重要作用。
A semiclassical theory for the orbital magnetization due to adiabatic evolutions of Bloch electronic states is proposed. It renders a unified theory for the periodic-evolution pumped orbital magnetization and the orbital magnetoelectric response in insulators by revealing that these two phenomena are the only instances where the induced magnetization is gauge invariant. This theory also accounts for the electric-field induced intrinsic orbital magnetization in two-dimensional metals and Chern insulators. We illustrate the orbital magnetization pumped by microscopic local rotations of atoms, which correspond to phonon modes with angular momentum, in toy models based on honeycomb lattice, and the results are comparable to the pumped spin magnetization via strong Rashba spin orbit coupling. We also show the vital role of the orbital magnetoelectricity in validating the Mott relation between the intrinsic nonlinear anomalous Hall and Ettingshausen effects.
