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Title: Increasing the creation yield of shallow single defects in diamond by surface plasma treatment

Single Nitrogen-Vacancy (NV) centers in diamond close to the crystal surface are very promising magnetic field sensors with very high sensitivity. Here, we report the enhanced creation of very shallow (less than 3 nm below the diamond surface) NV centers by using fluorine and oxygen plasma treatment. We observe a four fold increase—from 0.11% to about 0.45% in the production yield when the sample surface is terminated with fluorine or oxygen atoms. This effect is explained by the stabilization of the NV's negative charge state which is influenced by the various defects present on the diamond surface.
Authors:
; ; ;  [1] ; ;  [2] ; ;  [3]
  1. Institut für Quantenoptik, Ulm University, Albert Einstein Allee 11, Ulm 89081 (Germany)
  2. Institut für Experimentelle Physik II, Abteilung Nukleare Festkörperphysik, Universität Leipzig, Linnestraße 5, Leipzig 04103 (Germany)
  3. Institut für Oberflächenchemie und Katalyse, Ulm University, Albert-Einstein-Allee 47, Ulm 89081 (Germany)
Publication Date:
OSTI Identifier:
22217802
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 19; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ATOMS; CHARGE STATES; CRYSTALS; DEFECTS; DIAMONDS; FLUORINE; MAGNETIC FIELDS; NITROGEN; OXYGEN; PLASMA; SENSITIVITY; SENSORS; SURFACE TREATMENTS; SURFACES; V CENTERS; YIELDS