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Quantitative Model for TMR and Spin-transfer Torque in MTJ devices
02 Sep 2013 | Contributor(s): Deepanjan Datta, Behtash Behin-Aein, Sayeef Salahuddin, Supriyo Datta
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)...
Voltage Asymmetry of Spin-Transfer Torques
Experimentally, it is seen that the free magnetic layer of a spin torque transfer (STT) device experiences a larger in-plane torque when a negative (rather than positive) voltage is applied to the fixed layer. This is surprising because magnets do not have any intrinsic asymmetry. In this paper,...
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