Unified Analytical Model for Switching Behavior of Magnetic Tunnel Junction

The switching time of the magnetic tunnel junction for spin-transfer torque magnetoresistive random access memory is investigated as a function of the current. We present a unified analytical model for switching time so that the problem of discontinuity around the critical current is solved. The suggested unified model shows excellent agreement with the experimental data of parallel/antiparallel states simultaneously. Furthermore, only one set of parameters is used to represent all switching regime in our model.