Nanoscale magnetic field mapping with a single spin scanning probe magnetometer

作者：Rondin L^*; Tetienne J P; Spinicelli P; Dal Savio C; Karrai K; Dantelle G; Thiaville A; Rohart S; Roch J F; Jacques V

来源：Applied Physics Letters, 2012, 100(15): 153118.

DOI：10.1063/1.3703128

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.

• 出版日期2012-4-9