In-Situ Contacting and Current-Injection into Samples in Photoemission Electron Microscopes

TL;DR

This paper introduces a versatile magnetic microscope extension enabling in-situ current injection and pulsed current studies, facilitating advanced research into current-induced magnetization dynamics.

Contribution

It presents a novel setup that allows for in-situ current injection and pulsed current studies within a magnetic microscope, expanding experimental capabilities.

Findings

Demonstrated current-induced domain wall motion

Observed vortex core displacements

Enabled real-time magnetization change measurements

Abstract

Studying the interaction of spin-polarized currents with the magnetization configuration is of high interest due to the possible applications and the novel physics involved. High resolution magnetic imaging is one of the key techniques necessary for a better understanding of these effects. Here we present an extension to a magnetic microscope that allows for in-situ current injection into the structure investigated and furthermore for the study of current induced magnetization changes during pulsed current injection. The developed setup is highly flexible and can be used for a wide range of investigations. Examples of current-induced domain wall motion and vortex core displacements measured using this setup are presented.