Measure electrical currents with Scanning NV Magnetometry

Scanning NV magnetometry is not only suited to measure tiny magnetic fields. It allows to resolve electrical currents (via their magnetic fields) with unprecedented spatial resolution. 

We here apply a current to a 100 nm thick Cr/Au u-shaped wire. The current flows through the nanostructure inducing a local magnetic field which is detected using Scanning NV Magnetometry. We show that the local current density (calculated using the magnetic fields) can be used to identify defects in the nanostructure and geometry-specific current behaviour.

This opens the pathway for using Scanning NV Magnetometry as a tool for failure analysis.  The presented measurements have been performed using Qnami ProteusQ equipped with Vario PQ.

If you want to find out more about these groundbreaking results, download the technical note here.   

See more applications

Unconventional flexomagnetism in chromium oxide thin films

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Applying inhomogeneous strain to chromium oxide thin films induces a strong vertical gradient of the Neel temperature inferred through scanning NV magnetometry measurements.

Nanoscale mechanics of domain walls

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Scanning NV Magnetometry unveiled for the first time the nanoscale mechanics of antiferromagnetic domain walls opening new avenues for antiferromagnetic spintronics.

Topological defects in multiferroic antiferromagnets

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Qnami Quantilevers enabled the observation of topological defects in multiferroic antiferromagnets at rooom temperature for the first time.

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