Quantitative model for TMR and spin-transfer torque in MTJ devices

Authors:

Abstract
We present a Non-Equilibrium Green's Function (NEGF)-based model for spin torque transfer (STT) devices which provides qualitative as well as quantitative agreement with experimentally measured (1) differential resistances, (2) Magnetoresistance (MR), (3) In-plane torque (τ ∥ ) and (4) out-of-plane torque (τ ⊥ ) over a range of bias voltages, using a single set of three adjustable parameters. We believe our model is able to cover this diverse range of experiments.