Anomalous saturation effects due to optical spin depolarization in nitrogen-vacancy centers in diamond nanocrystals

Chapman, Robert and Plakhotnik, Taras (2012) Anomalous saturation effects due to optical spin depolarization in nitrogen-vacancy centers in diamond nanocrystals. Physical Review B: Condensed Matter and Materials Physics, 86 4: 045204.1-045204.8. doi:10.1103/PhysRevB.86.045204

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ279171.pdf Full text (open access) Click to show the corresponding preview/stream application/pdf 822.75KB 5

Author Chapman, Robert
Plakhotnik, Taras
Title Anomalous saturation effects due to optical spin depolarization in nitrogen-vacancy centers in diamond nanocrystals
Journal name Physical Review B: Condensed Matter and Materials Physics   Check publisher's open access policy
ISSN 1098-0121
1550-235X
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1103/PhysRevB.86.045204
Volume 86
Issue 4
Start page 045204.1
End page 045204.8
Total pages 8
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2013
Language eng
Formatted abstract The photoluminescence of the negatively charged nitrogen-vacancy (NV) center displays anomalous saturation behavior at high excitation pulse energies. Where the luminescence is expected to approach a maximum value asymptotically, we have found that it instead drops by as much as a factor of two. In this report, we present evidence that these effects are caused by optical spin depolarization of the NV center. We show that the presence of an external magnetic field results in a marked decrease in the anomalous character of the NV centers’ luminescence and demonstrate that low-energy pulses applied after a strong depolarizing pulse can repolarize the spin of the center. We also offer a model and derive important parameters describing dynamics in the NV center and its interaction with light, which quantitatively explain all the observations.
Keyword Fluorescent nanodiamonds
Color-centers
cellular biomarkers
Single-spin
Open Access Mandate Compliance Yes - Open Access (Publisher PDF in repository)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2013 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Access Statistics: 55 Abstract Views, 5 File Downloads  -  Detailed Statistics
Created: Sun, 19 Aug 2012, 00:13:20 EST by System User on behalf of School of Mathematics & Physics