Quantum Transport in Disorderd Mesoscopic Ferromagnetic Films

TL;DR

This paper investigates how impurity and domain-wall scattering affect electrical conductivity in disordered mesoscopic ferromagnetic films, revealing a resistivity reduction due to domain walls linked to dephasing effects.

Contribution

It provides a simulation-based analysis of impurity and domain-wall scattering effects on conductivity, highlighting the role of dephasing in resistivity changes.

Findings

Resistivity decreases in the presence of domain walls.

Dephasing caused by domain walls explains conductivity reduction.

Simulation results align with theoretical predictions.

Abstract

The effect of impurity and domain-wall scattering on the electrical conductivity of disordered mesoscopic magnetic thin films is studied by use of computer simulation. The results indicate a reduction of resistivity due to a domain wall, which is consistent with the explanation in terms of the dephasing caused by domain wall.