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MA: Fachverband Magnetismus
MA 25: Magnetic Imaging
MA 25.7: Talk
Wednesday, March 18, 2015, 11:00–11:15, H 1012
Scanning probe magnetic resonance imaging with chemical contrast on the nanoscale — •Thomas Häberle1, Dominik Schmid-Lorch1, Friedemann Reinhard1,2, and Jörg Wrachtrup1 — 13. Physikalisches Institut und Forschungszentrum SCoPE, Universität Stuttgart, Germany — 2Walter Schottky Institut, TU München, Germany
We present a novel scanning probe imaging method that employs the nitrogen-vacancy (NV)-center in diamond as an atom-sized magnetic field sensor [1]. This technique extends the range of accessible quantities in scanning probe microscopy to nuclear magnetic spin noise imaging - on arbitrary samples and under ambient conditions. Moreover, the unique properties of different nuclear species allow chemical contrast imaging, while the sensitivity extends below the surface of a sample, thus revealing subsurface features.
We demonstrate NMR imaging with 20 nm resolution conducted on a benchmark sample. Furthermore, we present chemically specific contrast by separating fluorine from hydrogen rich regions, which additionally allows for the detection of subsurface features [2].
[1] Staudacher, T. et al. Science 339, 561-3 (2013)
[2] Häberle, T. et al. arXiv:1406.3324 [cond-mat] 25 (2014)