SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Poster Magnetism I

MA 23.38: Poster

Dienstag, 28. März 2023, 17:00–19:00, P1

Nitrogen Vacancy Center in Diamond - Study of Correlated Electron Systems — •Sreehari Jayaram and Malik Lenger — 3rd Physics Institute, University of Stuttgart, Allmandring 13, Stuttgart, Germany

Investigation of emergent nanoscale magnetic properties of materials is a challenging field, which requires both, high sensitivity and spatial resolution. The scanning probe magnetometry based on the nitrogen-vacancy (NV) center in diamond is capable to fulfill these requirements and delivers complete vectorial magnetic field reconstructions. Due to optically detected magnetic resonance (ODMR), the NV center can operate as a quantum sensor from cryogenic temperatures up to room temperature with a frequency range from DC to GHz under high bias field conditions and UHV. In combination with atomic force microscopy, a sensor-sample distance of a few nanometers can be achieved with an NV-containing diamond AFM tip.

This has enabled investigations into the imaging of magnetic domains in single-layer CrBr3, the coexistence of AFM and FM domains in Moire twisted CrI3 trilayer, antiskyrmions in Heusler compounds, etc.

Thus, NV magnetometry opens the path to observe static and dynamic magnetic phenomena with nanoscale spatial resolution at a wide temperature range.