Compute-in memory using a STT/SOT hybrid triple level cell

Abstract

The newly established field of Spintronics make use of spin of an electron, one of the fundamental properties of an electron along with mass and charge. For decades, charge of the electron is utilized building devices which are at the core of all the electronic circuits. However, newer fields are emerging and challenging the traditional devices. Fig. 1.1 shows the spinning electron. An individual electron acts as a tiny little magnet and has a magnetic moment in two directions based on the direction of the spin. When the vector resultant of all the magnetic moments in a device is measured per unit volume, the term is known as Magnetization. It gives the net direction of the internal magnetic field of all the electron combined together. In ferromagnetic materials, it is possible to direct the magnetization either by applying an external magnetic field or by making a current flow through it.