Study of couplings effect on the performance of a spin-current diode: Nonequilibrium Green's function based model
Mesoscale and Nanoscale Physics
2015-06-04 v1
Abstract
In this paper, spin-dependent transport through a spin diode composed of a quantum dot coupled to a normal metal and a ferromagnetic lead is studied. The current polarization and the spin accumulation are analyzed using the equations of motion method within the nonequilibrium Green's function formalism. We present a suitable method for computing Green's function without carrying out any self-consistent calculation. The influence of coupling strength and magnetic field on the spin current is studied and observed that this device cannot work as a spin diode under certain conditions.
Keywords
Cite
@article{arxiv.1204.5858,
title = {Study of couplings effect on the performance of a spin-current diode: Nonequilibrium Green's function based model},
author = {M. Bagheri Tagani and H. Rahimpour Soleimani},
journal= {arXiv preprint arXiv:1204.5858},
year = {2015}
}
Comments
9 pages, 3 figures