Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 72: Poster Wednesday: Scanning Probe Techniques

O 72.12: Poster

Mittwoch, 3. April 2019, 17:45–20:00, Poster B2

homemade nv-based scanning probe microscopy — •Ke Bian — College of Physics, Peking University, China

NV center host in diamond crystal is suitable for magnetic detection at nanoscale because of its high magnetic sensitivity and atomic size. We established a NV-based scanning probe microscopy (NVSPM) system aiming for scanning magnetometry and nanoscale nuclear magnetic resonance (NMR). Our home-built Pan-type scanner is rigid against both acoustic and electronic noise from ambient environment. We can obtain atomic resolution in STM mode and nanometer resolution in AFM mode. The high NA objective, microwave coplanar waveguide and kilo-gauss vector magnetic field are integrated inside the scanner. We also established confocal imaging and pulse sequence system for addressing single NV and coherent manipulation. By dynamical decoupling technique we can easily detect internal C13 nuclear spins with shallow NVs. The stable and accurate positioning ability paves the way for direct imaging of nanoscale magnetic particles or nuclear spin clusters on diamond surface.