Absolute spin valve effect

TL;DR

This paper investigates charge transport in a 2D hybrid system with spin-orbit interaction, revealing an absolute spin valve effect where conductance varies with magnetization orientation, quantified by the ASVC.

Contribution

It introduces and analyzes the absolute spin valve effect in a 2DEG system with spin-orbit coupling, a novel phenomenon not previously characterized.

Findings

Conductance varies with magnetization orientation perpendicular to current.

Defined and studied the dependence of the Absolute Spin Valve Coefficient (ASVC).

Demonstrated the effect's sensitivity to system parameters.

Abstract

We study charge transport in a two dimensional hybrid systems consisting of nonmagnetic two dimensional electron gas with spin-orbit interaction sandwiched between a Ferromagnetic lead and a normal metallic lead (FM/2DEG/NM). An {\it absolute spin valve effect} is shown to exist. It is shown that the conductance of such a hybrid system changes upon rotating the magnetization such that it always stays perpendicular to the current direction. An ASVC ({\it Absolute Spin Valve Coefficient}) is defined to quantify this effect and its dependence on various parameter is studied.