SPINNING ELECTRONS

This add on an electron spin was the closest I came to find one which I understood:

Spin-polarized transport 

Spintronics

Electrons have an electrical charge, which enables them to carry an electrical current. However, electrons also have another property, which is the electron spin. Although the electron spin is from quantum mechanical origin and strictly speaking does not have a classical analog, it can be imagined as a "spinning top" which rotates clockwise ("spin-up") or anti-clockwise ("spin-down"). Due to its spin property the electron behaves like a little magnet, which can orient itself along or opposite to an external magnetic field. In the field of spin-based-electronics or "spintronics" one tries to use the electron spin and its sensitivity for a magnetic field in electrical circuits and sensors.
It is our interest is to explore how the electron spin can affect the electron transport properties when it traverses the path from a ferromagnetic material into a non-magnetic material, e.g. a normal metal, a semi-conductor (2DEG) or a superconductor.

(University of Groningen/Physiscs)