We characterize single nitrogen-vacancy (NV) centers created by ion implantation into diamond via thin layers working as screening masks. Despite the relatively high acceleration energy compared with standard ones () used to create near-surface NV centers, the screening masks modify the distribution of ions to be peaked at the diamond surface [Ito et al., Appl. Phys. Lett. 110, 213105 (2017)]. We examine the relation between coherence times of the NV electronic spins and their depths, demonstrating that a large portion of NV centers are located within 10 nm from the surface, consistent with Monte Carlo simulations. The effect of the surface on the NV spin coherence time is evaluated through noise spectroscopy, surface topography, and x-ray photoelectron spectroscopy.
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28 June 2020
Research Article|
June 24 2020
Spin coherence and depths of single nitrogen-vacancy centers created by ion implantation into diamond via screening masks
Special Collection:
Materials for Quantum Technologies: Computing, Information, and Sensing
Shuntaro Ishizu;
Shuntaro Ishizu
1
School of Fundamental Science and Technology, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Kento Sasaki
;
Kento Sasaki
1
School of Fundamental Science and Technology, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Daiki Misonou;
Daiki Misonou
1
School of Fundamental Science and Technology, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Tokuyuki Teraji;
Tokuyuki Teraji
2
National Institute for Materials Science
, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Kohei M. Itoh;
Kohei M. Itoh
a)
1
School of Fundamental Science and Technology, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
3
Center for Spintronics Research Network, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Eisuke Abe
Eisuke Abe
b)
1
School of Fundamental Science and Technology, Keio University
, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
4
RIKEN Center for Emergent Matter Science
, Wako, Saitama 351-0198, Japan
b)Author to whom correspondence should be addressed: eisuke.abe@riken.jp
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a)
Electronic mail: kitoh@appi.keio.ac.jp
b)Author to whom correspondence should be addressed: eisuke.abe@riken.jp
Note: This paper is part of the special collection on Materials for Quantum Technologies: Computing, Information, and Sensing.
J. Appl. Phys. 127, 244502 (2020)
Article history
Received:
April 28 2020
Accepted:
June 13 2020
Citation
Shuntaro Ishizu, Kento Sasaki, Daiki Misonou, Tokuyuki Teraji, Kohei M. Itoh, Eisuke Abe; Spin coherence and depths of single nitrogen-vacancy centers created by ion implantation into diamond via screening masks. J. Appl. Phys. 28 June 2020; 127 (24): 244502. https://doi.org/10.1063/5.0012187
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