Distribution of shallow NV centers in diamond revealed by photoluminescence spectroscopy and nanomachining

Journal article


Jadidi, M.F., Ozer, H.O., Goel, S, Kilpatrick, J.I., McEvoy, N., McCloskey, D., Donegan, J.F. and Cross, G.L.W. (2020). Distribution of shallow NV centers in diamond revealed by photoluminescence spectroscopy and nanomachining. Carbon. 167, pp. 114-121. https://doi.org/10.1016/j.carbon.2020.04.086
AuthorsJadidi, M.F., Ozer, H.O., Goel, S, Kilpatrick, J.I., McEvoy, N., McCloskey, D., Donegan, J.F. and Cross, G.L.W.
Abstract

We performed nanomachining combined with photoluminescence spectroscopy to understand the depth distribution of nitrogen-vacancy (NV) centers formed by low energy nitrogen ion irradiation of the diamond surface. NV‒ and NV0 fluorescence signals collected from the surface progressively machined by a diamond tip in an atomic force microscope (AFM) initially rise to a maximum at 5 nm depth before returning to background levels at 10 nm. This maximum corresponds to the defect depth distribution predicted by a SRIM simulation using a 2.5 keV implantation energy per nitrogen atom. Full extinguishing of implantation produced NV‒ and NV0 zero phonon line peaks occurred beyond 10 nm machining depth, coinciding with the end of easy surface material removal and onset of significant tip wear. The wear ratio of for NV active, ion irradiated diamond compared to the single-crystal diamond tip was surprisingly found to be 22:1. The reported results constitute the first integrated study of in-situ machining and wear characterization via optical properties of the diamond surface containing shallow formed NV centers. We discuss possible metrology applications for diamond tools used in precision manufacturing.

KeywordsNV center; N2 irradiation; AFM nanomachining; Diamond cantilever; Photoluminescence spectroscopy
Year2020
JournalCarbon
Journal citation167, pp. 114-121
PublisherElsevier
ISSN0008-6223
Digital Object Identifier (DOI)https://doi.org/10.1016/j.carbon.2020.04.086
Web address (URL)https://www.sciencedirect.com/science/article/pii/S0008622320304152
Publication dates
Online27 Apr 2020
Publication process dates
Accepted23 Apr 2020
Deposited29 May 2020
Accepted author manuscript
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Open
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