Correlating spin transport and electrode magnetization in a graphene spin valve: simultaneous magnetic microscopy and non-local measurements

TL;DR

This study combines magnetic microscopy and transport measurements to explore how electrode magnetization affects spin transport in a graphene spin valve, revealing the role of domain wall pinning.

Contribution

It introduces simultaneous magnetic microscopy and non-local measurements to directly correlate electrode magnetization with spin transport in graphene devices.

Findings

Magnetization states match the spin transport behavior.

Domain wall pinning influences transport signal features.

Electrode magnetization impacts non-local spin signals.

Abstract

Using simultaneous magnetic force microscopy (MFM) and transport measurements of a graphene spin valve, we correlate the non-local spin signal with the magnetization of the device electrodes. The imaged magnetization states corroborate the influence of each electrode within a one-dimensional spin transport model and provide evidence linking domain wall pinning to additional features in the transport signal.