Optimal conditions for NV center formation in type-1b diamond studied using photoluminescence and positron annihilation spectroscopies

J. Botsoa, T. Sauvage, M.-P. Adam, P. Desgardin, E. Leoni, B. Courtois, F. Treussart, and M.-F. Barthe
Phys. Rev. B 84, 125209 – Published 28 September 2011
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Abstract

We studied the parameters to optimize the production of negatively charged nitrogen-vacancy color centers (NV) in type-1b single crystal diamond using proton irradiation followed by thermal annealing under vacuum. Several samples were treated under different irradiation and annealing conditions and characterized by slow positron beam Doppler-broadening and photoluminescence (PL) spectroscopies. At high proton fluences another complex vacancy defect appears limiting the formation of NV. Concentrations as high as 2.3×1018 cm3 of NV have been estimated from PL measurements. Furthermore, we inferred the trapping coefficient of positrons by NV. This study brings insight into the production of a high concentration of NV in diamond, which is of utmost importance in ultrasensitive magnetometry and quantum hybrid systems applications.

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  • Received 27 April 2011

DOI:https://doi.org/10.1103/PhysRevB.84.125209

©2011 American Physical Society

Authors & Affiliations

J. Botsoa1,2, T. Sauvage1, M.-P. Adam2, P. Desgardin1, E. Leoni1, B. Courtois1, F. Treussart2,*, and M.-F. Barthe1,†

  • 1Conditions Extrêmes et Matériaux: Haute Température et Irradiation, CNRS UPR 3079, F-45071 Orléans, France
  • 2Laboratoire de Photonique Quantique et Moléculaire, CNRS UMR 8537, École Normale Supérieure de Cachan, F-94235 Cachan, France

  • *francois.treussart@ens-cachan.fr
  • marie-france.barthe@cnrs-orleans.fr

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Issue

Vol. 84, Iss. 12 — 15 September 2011

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