Journal article
Evidence for Primal sp(2) Defects at the Diamond Surface: Candidates for Electron Trapping and Noise Sources
Alastair Stacey, Nikolai Dontschuk, Jyh-Pin Chou, David A Broadway, Alex K Schenk, Michael J Sear, Jean-Philippe Tetienne, Alon Hoffman, Steven Prawer, Chris I Pakes, Anton Tadich, Nathalie P de Leon, Adam Gali, Lloyd CL Hollenberg
Advanced Materials Interfaces | Wiley | Published : 2019
Abstract
Many advanced applications of diamond materials are now being limited by unknown surface defects, including in the fields of high power/frequency electronics and quantum computing and quantum sensing. Of acute interest to diamond researchers worldwide is the loss of quantum coherence in near-surface nitrogen-vacancy (NV) centers and the generation of associated magnetic noise at the diamond surface. Here for the first time is presented the observation of a family of primal diamond surface defects, which is suggested as the leading cause of band-bending and Fermi-pinning phenomena in diamond devices. A combination of density functional theory and synchrotron-based X-ray absorption spectroscop..
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Grants
Awarded by Australian Research Council (ARC) under the Centre of Excellence scheme
Awarded by National Research Development and Innovation Office of Hungary (NKFIH) within the Quantum Technology National Excellence Program
Awarded by EU QuantERA within Q-Magine project (NKFIH)
Awarded by European Commission within Quantum Technology Flagship ASTERIQS project
Awarded by NSF under the CAREER program
Awarded by ARC Laureate Fellowship
Awarded by ARC through the Discovery Early Career Researcher Award scheme
Funding Acknowledgements
This work was supported in part by the Australian Research Council (ARC) under the Centre of Excellence scheme (Project No. CE110001027). This research was undertaken on the Soft X-Ray Spectroscopy beamline at the Australian Synchrotron, part of ANSTO. 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.G. acknowledges support from the National Research Development and Innovation Office of Hungary (NKFIH) within the Quantum Technology National Excellence Program (Project No. 2017-1.2.1-NKP-2017-00001), the EU QuantERA within Q-Magine project (NKFIH Grant No. 127889), and the European Commission within Quantum Technology Flagship ASTERIQS project (Grant No. 820394). N.P.dL acknowledges support from the NSF under the CAREER program (grant DMR-1752047). L.C.L.H. acknowledges support of an ARC Laureate Fellowship (Project No. FL130100119). J.-P.T. acknowledges support from the ARC through the Discovery Early Career Researcher Award scheme (DE170100129) and the University of Melbourne through an Establishment Grant and an Early Career Researcher Grant. D.A.B was supported by an Australian Government Research Training Program Scholarship.