Spin Filtering with Chiral Organic Molecules and Graphene: Towards Chiral Spintronics

电子是固态器件中的基本电荷载体，具有质量、电荷和自旋三种固有性质。自旋是一种量子力学性质，但可以松散地想象为附着在电子上的微小“内在”磁偶极矩。在传统的电子器件中，自旋磁矩在空间上沿随机方向取向，自旋在器件运行中没有显著作用。在新兴的“自旋电子学”领域中，中心主题是使用具有明确自旋方向的“自旋极化”载流子来实现新型器件。自旋电子设备已经在最先进的硬盘驱动器和存储器中无处不在，人们正在共同努力实现基于自旋的信息处理。

Electrons, the fundamental charge carriers in solid-state devices, possess three intrinsic properties: mass, charge and spin. Spin is a quantum mechanical property, but can be loosely visualized as a tiny "intrinsic" magnetic dipole moment attached to an electron. In conventional electron devices, spin magnetic moments are oriented along random directions in space and spins play no significant role in device operation. In the emerging field of "spintronics" the central theme is to use "spin-polarized" carriers with well-defined spin orientations to realize novel devices. Spintronic devices are already ubiquitous in state-of-the-art hard drives and memories and a concerted effort is underway to realize spin-based information processing.