Spin-Transfer Torque

Abstract

In this chapter, we have introduced the concept and definition of Spin Transfer Torque. Furthermore, we have discussed the Spin Transfer Torque effect in layer structures, both for Single and Double ferromagnetic layers. We have also addressed interesting topics like Spin-Transfer-Torque-driven Magnetization Dynamics, both in the absence and presence of spin transfer torque. Few experimental results, such as point contact device, multilayer nanopillar, etc., have also been discussed in this case. We have also taken into account some possible applications of spin transfer torques, such as magnetic random access memory, spin-transfer-torque-driven microwave sources and oscillators, etc., in this chapter.