Thermal stability of Ir-Mn∕Co-Fe-B∕Al-O∕Co-Fe-B tunnel junctions

Thermal spin transfer in Fe-MgO-Fe tunnel junctions.

We compute thermal spin transfer (TST) torques in Fe-MgO-Fe tunnel junctions using a first principles wave-function-matching method. At room temperature, the TST in a junction with 3 MgO monolayers amounts to 10(-7) J/m(2)/K, which is estimated to cause magnetization reversal for temperature differences over the barrier of the order of 10 K. The large TST can be explained by multiple scattering...

Interlayer Exchange Coupling in Fe/MgO/Fe Magnetic Tunnel Junctions

TEM and EELS measurements of interface roughness in epitaxial Fe/MgO/Fe magnetic tunnel junctions

V. Serin,1,* S. Andrieu,2 R. Serra,1 F. Bonell,2 C. Tiusan,2 L. Calmels,1 M. Varela,3 S. J. Pennycook,3 E. Snoeck,1 M. Walls,4 and C. Colliex4 1CEMES-CNRS, BP 4347, 31055 Toulouse, France 2LPM, CNRS/Nancy Université, UMR7556, BP 239, F-54506 Vandoeuvre, France 3Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 4Laboratoire de Physique des ...

Effect of interface states on spin-dependent tunneling in Fe/MgO/Fe tunnel junctions

Effect of interface states on spin-dependent tunneling in Fe/MgO/ Fe tunnel junctions" (2005).

Effect of oxygen vacancies on interlayer exchange coupling in Fe/MgO/Fe tunnel junctions

We have investigated the interlayer exchange coupling (IEC) in Fe/MgO/Fe(0 0 1) tunnel junctions with and without oxygen vacancies in MgO, using model and density functional calculations. The model predicts that IEC changes sign from ferromagnetic to antiferromagnetic if a defect level matches the Fermi energy. Ab initio calculations show that for perfect junctions, IEC is ferromagnetic and dec...