  Spintronics aims to utilize the spin degree of freedom for energy-efficient,
non-volatile memory and logic devices. In this research update, we review
state-of-the-art developments and new directions in charge- and spin-based
memory/logic with a focus on spintronics and the fascinating potential for
superconductivity to boost spin transmission via spin-polarized quasiparticles
or triplet Cooper pairs.
