Novel Giant Magnetoresistance Model using Multiple Barrier Potential

TL;DR

This paper introduces a novel multiple barrier potential model for Giant Magnetoresistance, explaining the effect through spin-dependent potentials and transmission probabilities, and qualitatively matches typical GMR behavior.

Contribution

The paper presents a new GMR model based on multiple barrier potentials and transfer matrix method, providing a microscopic explanation of the GMR effect.

Findings

Model qualitatively fits typical GMR graph

Transmission probability determined by transfer matrix method

Spin-dependent potentials influence conductance

Abstract

This paper proposes a new model for Giant Magnetoresistance (GMR) and calculates its typical graph qualitatively. The model foundation is the microscopic mechanism in GMR, where the GMR effect can be explained by intrinsic and extrinsic potential. The potentials are spin-dependent. The potentials determine the transmission probability then it will give conductance value. Here, the multiple barrier potential model is proposed as the new GMR model. The transmission probability is determined using transfer matrix method. It was found that this model is fit qualitatively with the typical GMR graph.