82 citations · 137 across the 9 of their papers we have counts for
9 papers
Bias controlled Interlayer Exchange Coupling
Nathan A. Walker, Alex D. Durie, Andrey Umerski
We demonstrate, using computer simulations and a non-equilibrium Greens function approach, that the sign of the out-of-equilibrium interlayer exchange coupling (ooeIEC) can change…
Application of the Landauer-Büttiker method to the calculation of interlayer exchange coupling in closed ballistic multi-layers
Valentin Fadeev, Andrey Umerski
In this communication we study the behaviour of spin current components in a ballistic junction consisting of two semi-infinite leads and a scattering region composed of two magnet…
Application of the Landauer formalism to the calculation of spin current
Valentin Fadeev, Andrey Umerski
In this communication we apply the Landauer method and transfer matrix formalism to the calculation of spin current in magnetic multilayered structures within a ballistic quantum-m…
Topological phase of the interlayer exchange coupling with application to magnetic switching
A. Umerski
We show, theoretically, that the phase of the interlayer exchange coupling (IEC) undergoes a topological change of approximately as the chemical potential of the ferromagnetic…
New mechanism for generating spin transfer torque without charge current
G. Autès, J. Mathon, A. Umerski
A new physical mechanism for generating spin-transfer torque is proposed. It is due to interference of bias driven nonequilibrium electrons incident on a switching junction with th…
Theory of Spin-Transfer Torque in the Current-in-Plane Geometries
O. Wessely, A. Umerski, J. Mathon
Two alternative current-induced switching geometries, in which the current flows parallel to the magnet/nonmagnet interface, are investigated theoretically using the nonequilibrium…