A new experimental storage medium called "Spintronics"
Racetrack memory
Spin causes electrons to exhibit magnetism.
Spin injection refers to the process of introducing a spin-polarized current or spin-polarized carriers (electrons or holes) into a material. This is often associated with spintronics, a field that explores the role of electron spin in addition to its fundamental electronic charge, aiming to develop new technologies for information processing and storage. Spin injection is crucial for manipulating and utilizing the spin properties of electrons in various devices such as spin transistors and spin valves.
The exact opposite of a spin down electron.
It won't be able to spin which it will not be able to store information.
one is spin up one is spin down, there are no other possibilities.
If all electrons were at rest, they would still have a directional spin. However, there are only two ways an electron can spin (up or down) and so there would only be two types of electrons. However, if we focus on the property of spin itself instead of the direction, all electrons are the same. Electrons have a spin magnitude of 1/2, and this is a property that will never change.
2. Two electrons of opposite spin. This is true of all s, p, d, f g.... orbitals, eah can only contain two electrons of opposite spin.
Electrons have spin of a 1/2. These make electrons fermions. According to Pauli's exclusion principle, no more than one fermion can have the same spin in the same space. So, the electrons occupying the same space must have opposite spin (and so, only two electrons can occupy the same orbital as a result of this, as three electrons will results in two electrons having the same spin state).
by looking at it
Electron spin is not a property that you can measure in revolutions per second.
Electrons
None - because electrons are part of the atom.