Nanoscale magnetic field mapping with a single spin scanning probe magnetometer

Details Nanoscale magnetic field mapping with a single spin scanning probe magnetometer Nanoscale magnetic field mapping with a single spin scanning probe magnetometer

2011-08-22

arxiv.org/abs/1108.4438v3

Appl. Phys. Lett. 100, 153118 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We demonstrate quantitative magnetic field mapping with nanoscale resolution, by applying a lock-in technique on the electron spin resonance frequency of a single nitrogen-vacancy defect placed at the apex of an atomic force microscope tip. In addition, we report an all-optical magnetic imaging technique which is sensitive to large off-axis magnetic fields, thus extending the operation range of diamond-based magnetometry. Both techniques are illustrated by using a magnetic hard disk as a test sample. Owing to the non-perturbing and quantitative nature of the magnetic probe, this work should open up numerous perspectives in nanomagnetism and spintronics.

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