Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Non-ultrafast magnetization dynamics

MA 23.8: Vortrag

Mittwoch, 14. März 2018, 11:30–11:45, H 0112

Dynamic nuclear polarization with single shallow NV center in diamond — •Farida Shagieva, Andrej Denisenko, Philipp Neumann, and Jörg Wrachtrup — 3rd Institute of Physics, University of Stuttgart, Stuttgart, Germany

Nuclear magnetic resonance (NMR) is one of the most powerful techniques used in physics and life sciences. The latest developments in this area are directed to make high-resolution NMR systems that are smaller, cheaper, more robust and portable than the existing ones. Recently, the shallow nitrogen-vacancy centres in diamond started to be used for nanoscale NMR imaging and spectroscopy of nuclear species under ambient conditions [1]. These multifunctional quantum sensors provide the noninvasive methods to get the chemical composition [2] of the molecules and to study the system dynamics within the nanoscopic volume above the diamond surface. Despite a remarkable progress in this area, potential applications are often limited by low sensitivity. Hyperpolarisation techniques have the potential to overcome this limitation and revolutionise the use of compact NMR. Several techniques to realise the (DNP) dynamic nuclear polarization using NV centres have been demonstrated for internal diamond spins [3-4]. The goal of this study is to perform a hyperpolarization of external for diamond solid spins and demonstrate an improvement of the NMR signal.

[1] T. Staudacher et al., Science 339, 561 (2013).

[2] N. Aslam et al., Science 357, 67 (2017).

[3] P. London et al., PRL 111, 067601 (2013).

[4] F. Poggiali et al., Phys. Rev. B 95, 195308 (2017).