In the presented work, the compatibility of photoelectric readout of the spin state
of nitrogen vacancy centers with the recently discovered strong creation yield en-
hancement for these centers by sulfur doping of the host material was successfully
demonstrated.
For this purpose, first a measurement setup was built, where photoelectric detection
of magnetic resonance is possible in the continuous wave as well as in the pulsed
mode. Using this setup and a diamond sample that was prepared with ion implan-
tation, it could be proven by a suitable separation of the measurement spots as well
as the selected sequence of implantation and measurement steps that photoelectric
spin readout is not only possible despite strong sulfur doping, but in fact also results
in a moderate improvement of the signal-to-noise ratio. However, the investigations
also reveal the occurrence of an additional photocurrent associated with the sulfur
doping, which could be observed delocalized from the implantation site on the entire
sample. This additional photocurrent represents a significant interfering signal at
least for the continuous wave mode, which is, however, the less relevant operation
mode for spin readout.
In the last part of this work, efforts have been made to understand the interfering
signal and its origin in more detail. Investigations of the electrical conductivity of
the sample as a function of the wavelength of the excitation light revealed impor-
tant properties that clearly narrow down the field of potential sources, although no
definite identification was possible.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:88478 |
| Date | 06 December 2023 |
| Creators | Becker, Sascha |
| Contributors | Universität Leipzig |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/acceptedVersion, doc-type:doctoralThesis, info:eu-repo/semantics/doctoralThesis, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
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