Spin transfer in magnetic tunnel junctions with hot electrons.
Recent data on the bias dependence of the spin transfer effect in magnetic tunnel junctions have shown that torque remains intact at bias voltages for which the tunneling magnetoresistance has been strongly reduced. We show that the current induced excitations due to hot electrons, while reducing the magnetoresistance, enhance both the charge current and the spin transfer in magnetic tunnel junctions in such a manner that the ratio of the torque to the charge current does not significantly change.
Levy
Peter M
PM
Thales Research Center, Unité Mixte de Physique CNRS-THALES, Route Départementale 128, 91767 Palaiseau, France.
Fert
Albert
A