Spin dependent tunneling through a quantum dot attached to ferromagnetic electrodes with non-collinear magnetizations
|Józef Barnaś 1,2, Malgorzata Wawrzyniak 1, Martin Gmitra 1|
1. Adam Mickiewicz University, Department of Physics, Umultowska 85, Poznań 61-614, Poland
Resonant tunneling through an interacting single-level quantum dot in an external magnetic field and coupled to ferromagnetic electrodes with non-collinear magnetizations has been analyzed theoretically. The non-equilibrium Green function technique based on the equation of motion method has been applied in order to calculate the angular dependence of the tunnel magnetoresistance and the average spin components on the dot. The Green functions have been calculated in the Hartree-Fock approximation. The calculations are restricted to the weak coupling regime.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium D, by Józef Barnaś
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-08-16 12:38 Revised: 2009-06-07 00:44