1210.3201 (Elke Neu et al.)

Low temperature investigations of single silicon vacancy colour centres
in diamond    [PDF]

Elke Neu, Christian Hepp, Michael Hauschild, Stefan Gsell, Martin Fischer, Hadwig Sternschulte, Doris Steinmueller-Nethl, Christoph Becher

We study single silicon vacancy (SiV) centres in chemical vapour deposition (CVD) nanodiamonds on iridium as well as an ensemble of SiV centres in a high quality, low stress CVD diamond film by using temperature dependent luminescence spectroscopy in the temperature range 5-295 K. We investigate in detail the temperature dependent fine structure of the zero-phonon-line (ZPL) of the SiV centres. The ZPL transition is affected by inhomogeneous as well as temperature dependent homogeneous broadening and blue shifts by about 20 cm-1 upon cooling from room temperature to 5 K. We employ excitation power dependent g(2) measurements to explore the temperature dependent internal population dynamics of single SiV centres and infer almost temperature independent dynamics.

View original: http://arxiv.org/abs/1210.3201