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HL: Fachverband Halbleiterphysik
HL 39: Posters II (Topological insulators; Graphene; Spintronics and spin physics; Quantum information science)
HL 39.28: Poster
Dienstag, 17. März 2015, 14:00–20:00, Poster F
Creation and Stabilization of Shallow Nitrogen-Vacancy Centers by Surface Plasma Termination — •Christian Osterkamp1, Johannes Lang1, Jochen Scharpf1, Christoph Müller1, Liam Paul McGuiness1, Thomas Diemant2, Rolf Jürgen Behm2, Boris Naydenov1, and Fedor Jelezko1 — 1Institut für Quantenoptik, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany — 2Institut für Oberflächenchemie und Katalyse, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
Nitrogen-vacancy centers (NV) in diamond a few nanometers below the crystal surface can be used as magnetic field sensors with very high sensitivity and spatial resolution. The fluorescence of single NVs can be detected and it's electron spin can be polarized, read-out and manipulated at ambient conditions. We created shallow NV centers by nitrogen delta doping during a plasma enhanced chemical vapor deposition (PECVD) growth process. After stabilizing the NV's negative charge state by a SF6 plasma treatment, the hydrogen nuclear magentic resonance signal from protons in the immersion oil were detected.