Current-voltage characteristics of semiconductor/ferromagnet junctions in the spin blockade regime

Details Current-voltage characteristics of semiconductor/ferromagnet junctions in the spin blockade regime Current-voltage characteristics of semiconductor/ferromagnet junctions in the spin blockade regime

2007-07-30

arxiv.org/abs/0707.4475v1

Phys. Rev. B 77, 073301 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.77.073301

It was recently predicted [Phys. Rev. B 75, 193301 (2007)] that spin blockade may develop at nonmagnetic semiconductor/perfect ferromagnet junctions when the electron flow is directed from the semiconductor into the ferromagnet. Here we consider current-voltage characteristics of such junctions. By taking into account the contact resistance, we demonstrate a current stabilization effect: by increasing the applied voltage the current density through the junction saturates at a specific value. The transient behavior of the current density is also investigated.

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