Journal article
X-ray quantification of oxygen groups on diamond surfaces for quantum applications
N Dontschuk, LVH Rodgers, JP Chou, DA Evans, KM O’Donnell, HJ Johnson, A Tadich, AK Schenk, A Gali, NP de Leon, A Stacey
Materials for Quantum Technology | Published : 2023
Open access
Abstract
Identifying the surface chemistry of diamond materials is increasingly important for device applications, especially quantum sensors. Oxygen-related termination species are widely used because they are naturally abundant, chemically stable, and compatible with stable nitrogen vacancy centres near the diamond surface. Diamond surfaces host a mixture of oxygen-related species, and the precise chemistry and relative coverage of different species can lead to dramatically different electronic properties, with direct consequences for near-surface quantum sensors. However, it is challenging to unambiguously identify the different groups or quantify the relative surface coverage. Here we show that a..
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Awarded by U.S. Department of Energy
Funding Acknowledgements
This material is based upon work supported by U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences and Office of Basic Energy Sciences under Award No. LAB 21-2491. Surface spectroscopy and analysis at Princeton was primarily supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0018978. Diamond surface preparation was supported by the NSF under the CAREER program (Grant DMR1752047). L V H R was supported by the National Defense Science and Engineering Graduate Fellowship. A G acknowledges the support from the NKFIH in Hungary for the National Excellence Program (Grant No. KKP129866), the Quantum Information National Laboratory (Grant No. 2022-2.1.1-NL-2022- 0000), and the EU QuantERA II MAESTRO project and from the European Commission for the QuMicro project (Grant No. 101046911). This research was undertaken on the Soft x-ray beam-line at the Australian Synchrotron, part of ANSTO. N D was support by an Australian Research Council Discovery Project Discovery Project (Grant 200103712). The United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.