Hamburg 2009 – wissenschaftliches Programm

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SYDD: Defect centers in diamond for applications in quantum optics and nanophotonics

SYDD 2: Defect centers in diamond for applications in quantum optics and nanophotonics II

SYDD 2.6: Vortrag

Freitag, 6. März 2009, 16:00–16:15, Audi-B

ODMR of NV centres in nano-diamonds covered with N@C₆₀ — •Rolf Simon Schoenfeld^1,2, Kati Huebener^1,2, Juliane Kniepert¹, Christoph Oelmueller¹, and Wolfgang Harneit^1,2 — ¹Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin — ²Abteilung SE2, Hahn-Meitner-Institut Berlin GmbH, Glienicker Str. 100, D-14109 Berlin

We report on experiments to detect electron spins in the molecular system N@C₆₀ indirectly by coupling them to single electron spins in diamond. The spin of single nitrogen-vacancy centres in nano-diamonds can be routinely measured using optically detected magnetic resonance (ODMR) in a confocal microscopy setup. Line splittings compatible with expectations are sometimes seen in the ODMR spectra. Direct comparison of spectra on individual nano-diamonds before and after coverage with fullerenes however gave no clear evidence that the spin-spin coupling was due to N@C₆₀.