Journal article

Comparison of different methods of nitrogen-vacancy layer formation in diamond for wide-field quantum microscopy

AJ Healey, A Stacey, BC Johnson, DA Broadway, T Teraji, DA Simpson, J-P Tetienne, LCL Hollenberg

Physical Review Materials | American Physical Society | Published : 2020

Abstract

Thin layers of near-surface nitrogen-vacancy (NV) defects in diamond substrates are the workhorse of NV-based wide-field magnetic microscopy, which has applications in physics, geology, and biology. Several methods exist to create such NV layers, which generally involve incorporating nitrogen atoms (N) and vacancies (V) into the diamond through growth and/or irradiation. While there have been detailed studies of individual methods, a direct side-by-side experimental comparison of the resulting magnetic sensitivities is still missing. Here we characterize, at room and cryogenic temperatures, ≈ 100−nm-thick NV layers fabricated via three different methods: (1) low-energy carbon irradiation of ..

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Grants

Awarded by Australian Research Council (ARC)


Awarded by JSPS KAKENHI


Awarded by JST CREST


Awarded by MEXT Q-LEAP


Funding Acknowledgements

We acknowledge support from the Australian Research Council (ARC) through Grants No. DE170100129, No. DE190100336, No. LP160101515, No. CE170100012, No. LE180100037, and No. DP190101506. We also acknowledge the AFAiiR node of the NCRIS Heavy Ion Capability for access to ion-implantation facilities. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). A.J.H. and D.A.B. are supported by an Australian Government Research Training Program Schol-arship. T.T. acknowledges the support of JSPS KAKENHI (Grants No. 20H02187 and No. 19H02617), JST CREST (Grant No. JPMJCR1773), and MEXT Q-LEAP (Grant No. JPMXS0118068379).