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Relaxometry and dephasing imaging of superparamagnetic magnetite nanoparticles using a single qubit

Abstract:

To study the magnetic dynamics of superparamagnetic nanoparticles, we use scanning probe relaxometry and dephasing of the nitrogen vacancy (NV) center in diamond, characterizing the spin noise of a single 10 nm magnetite particle. Additionally, we show the anisotropy of the NV sensitivity's dependence on the applied decoherence measurement method. By comparing the change in relaxation (T1) and dephasing (T2) time in the NV center when scanning a nanoparticle over it, we are able to extract th...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1021/acs.nanolett.5b00679

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
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Baden-Württemberg Foundation More from this funder
Alexander von Humboldt-Stiftung More from this funder
Deutsche Forschungsgemeinschaft More from this funder
Defense Advanced Research Projects Agency More from this funder
Publisher:
American Chemical Society Publisher's website
Journal:
Nano letters Journal website
Volume:
15
Issue:
8
Pages:
4942–4947
Publication date:
2015-08-05
DOI:
ISSN:
1530-6984 and 1530-6992
Pubs id:
pubs:558516
URN:
uri:34394455-e51a-448d-8412-583dd983d13e
UUID:
uuid:34394455-e51a-448d-8412-583dd983d13e
Local pid:
pubs:558516
Paper number:
8

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