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

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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.