Patent ID: 8836061
Filing Date: 2014-09-16
Classification: H01L

Abstract:
1. A spin transfer torque magnetic random access memory (STTMRAM) magnetic tunnel junction (MTJ) stack made of layers to which when electric current is applied cause switching of the direction of magnetization of at least one of the layer comprising: a reference layer (RL) with a direction of magnetization that is fixed upon manufacturing of the STTMRAM MTJ stack; a junction layer (JL) formed on top of the RL; a free layer (FL) formed on top of the JL, the FL having a direction of magnetization that is switchable relative to that of the RL upon the flow of electric current through the spin transfer torque magnetic random access memory (STTMRAM) magnetic tunnel junction (MTJ) stack; a spin confinement layer (SCL) formed on top of the FL, the SCL made of conductive dielectric layer with a thickness of 0.6 nano meters (nm) to 5 nm.