Fabrication of all diamond scanning probes for nanoscale magnetometry
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-06-01 |
| Journal | Review of Scientific Instruments |
| Authors | Patrick Appel, Elke Neu, Marc Ganzhorn, Arne Barfuss, Marietta Batzer |
| Institutions | University of Basel, Saarland University |
| Citations | 157 |
Abstract
Section titled āAbstractāThe electronic spin of the nitrogen vacancy (NV) center in diamond forms an atomically sized, highly sensitive sensor for magnetic fields. To harness the full potential of individual NV centers for sensing with high sensitivity and nanoscale spatial resolution, NV centers have to be incorporated into scanning probe structures enabling controlled scanning in close proximity to the sample surface. Here, we present an optimized procedure to fabricate single-crystal, all-diamond scanning probes starting from commercially available diamond and show a highly efficient and robust approach for integrating these devices in a generic atomic force microscope. Our scanning probes consisting of a scanning nanopillar (200 nm diameter, 1-2 Ī¼m length) on a thin (<1 Ī¼m) cantilever structure enable efficient light extraction from diamond in combination with a high magnetic field sensitivity (Ī·ACā50Ā±20nT/Hz). As a first application of our scanning probes, we image the magnetic stray field of a single Ni nanorod. We show that this stray field can be approximated by a single dipole and estimate the NV-to-sample distance to a few tens of nanometer, which sets the achievable resolution of our scanning probes.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- **** - Quantitative nanoscale vortex imaging using a cryogenic quantum magnetometer [Crossref]