Proximal magnetometry of monolayers of magnetic moments

TL;DR

This paper introduces a novel proximal magnetometry technique using low energy muon spin rotation and beta-detected NMR to measure magnetic properties of monolayers and ultra-thin magnetic films.

Contribution

The paper presents a new measurement method that employs a spin probe implanted in the substrate to detect magnetic fields of monolayers, enabling non-invasive characterization.

Findings

The method accurately predicts magnetic field distributions for monolayers.

It is highly suitable for single molecule magnets.

The technique can be extended to ultra-thin magnetic films.

Abstract

We present a method to measure the magnetic properties of monolayers and ultra-thin films of magnetic material. The method is based on low energy muon spin rotation and $\beta$-detected nuclear magnetic resonance measurements. A spin probe is used as a "proximal" magnetometer by implanting it in the substrate, just below the magnetic material. We calculate the expected magnetic field distribution sensed by the probe and discuss its temperature and implantation depth dependencies. This method is highly suitable for measuring the magnetic properties of monolayers of single molecule magnets, but can also be extended to ultra-thin magnetic films.