Spin Transport in Metals and Semiconductors

I will discuss a number of recent issues connected with spin-dependent transport in metals, semiconductors, and molecules with an emphasis on circumstances in which sophisticated electronic structure calculations can help achieve qualitative understanding. The specific topics that I will mention the anomalous Hall effect in ferromagnetic metals and semiconductors, the spin Hall effect, giant magnetoresistance and spin-torques in circuits containing antiferromagnetic metals, and current induced magnetization dynamics in transport through magnetic molecules.