论文标题
旋转电流和手性自由度固有的电子轨道固有的自由度
Spin current and chirality degrees of freedom inherent in localized electron orbitals
论文作者
论文摘要
在固态物理学中，通常将任何相变为电荷，自旋或电流的显微镜分布的变化。在这里，我们报告了局部电子轨道固有的外来顺序参数的性质，该参数无法主要由这三个基本数量捕获。该顺序参数被描述为在自旋轨道耦合下连接不同的总角动量的电动环。相应的显微镜物理量是原子尺度上的自旋电流张量，它诱导自旋衍生的电化极化和DIRAC方程的手性。我们强调的是，基本粒子固有的手性是电圆环多物的本质。这些发现将微观旋转电流和手性联系起来与多物的概念联系起来，并为物质量子状态提供了新的视角。
In solid state physics, any phase transition is commonly observed as a change in the microscopic distribution of charge, spin, or current. Here we report the nature of an exotic order parameter inherent in the localized electron orbitals that cannot be primarily captured by these three fundamental quantities. This order parameter is described as the electric toroidal multipoles connecting different total angular momenta under the spin-orbit coupling. The corresponding microscopic physical quantity is the spin current tensor on an atomic scale, which induces spin-derived electric polarization and the chirality of the Dirac equation. We stress that the chirality intrinsic to the elementary particle is the essence of electric toroidal multipoles. These findings link microscopic spin currents and chirality in the Dirac theory to the concept of multipoles and provide a new perspective for quantum states of matter.
