Spin Capacitor for Energy-Efficient Electronics

Researchers have created a spin capacitor that can generate and hold the spin state of electrons for a number of hours. Previous attempts have only held the spin state for a fraction of a second. In electronics, a capacitor holds energy in the form of electric charge. A spin capacitor is a variation on that idea. Instead of holding just charge, it also stores the spin state of a group of electrons; in effect, it freezes the spin position of each of the electrons.