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Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 51: Magnetism Poster B

MA 51.8: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster C

Fabrication of diamond tips for optical magnetometrystefan dietel1, •severine diziain1, robert staacke1, lukas botsch1, bernd abel2, jan meijer1, and pablo esquinazi11Universität Leipzig - Felix-Bloch-Institut für Festkörperphysik, Linnéstraße 5, 04103 Leipzig — 2Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig

Nanoscale optical magnetometers based on negatively charged nitrogen - vacancy (NV) centers in diamond have been demonstrated for the detection and imaging of magnetic fields with both high spatial resolution and high sensitivity. They consist either of a diamond nanocrystal hosting a single NV center attached to the extremity of an atomic force microscopy tip or of a diamond nanopillar with a single NV center etched in a diamond cantilever. The latter allows for higher sensitivity and better light collection efficiency. However its fabrication is not very efficient since a large quantity of diamond has to be damaged for the production of only a few tips. We propose a technique that consumes less diamond. By angle etching only the surface of the diamond is used for the tip fabrication. With this technique the crystalline orientation can be chosen to optimize the light coupling and the NV center orientation.

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