Physicists from the University of Leeds have made a breakthrough, they have created a spin capacitor that can generate and hold the spin state of electrons for several hours. This is the first time this has ever been accomplished, previous attempts have only ever held the spin state for a fraction of a second.
In electronics, a capacitor stores an electric charge. A spin capacitor not only holds a charge but also stores the spin state of a group of electrons-which basically freezes the spin position of each of the electrons.
The ability of this new capacitor makes it possible to create highly efficient storage devices. So much so that a spin capacitor measuring just one square inch could store 100 Terabytes of data.