Nature of magnetism in thiol-capped gold nanoparticles investigated with Muon spin rotation

Muon spin rotation/relaxation measurements show clear evidence for magnetism in 2.2 nm gold nanoparticles capped with butanethiol. At low temperatures (1.8 K), there is significant spin relaxation which decreases as a function of both the applied longitudinal magnetic field and increasing temperatur...

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Bibliographic Details
Published in:	Applied physics letters Vol. 112; no. 5
Main Authors:	Dehn, M. H., Arseneau, D. J., Buck, T., Cortie, D. L., Fleming, D. G., King, S. R., MacFarlane, W. A., McDonagh, A. M., McFadden, R. M. L., Mitchell, D. R. G., Kiefl, R. F.
Format:	Journal Article
Language:	English
Published:	Melville American Institute of Physics 29-01-2018
Subjects:	Applied physics Gold Magnetism Muon spin relaxation Muon spin rotation Nanoparticles Rotation
Online Access:	Get full text
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Summary:	Muon spin rotation/relaxation measurements show clear evidence for magnetism in 2.2 nm gold nanoparticles capped with butanethiol. At low temperatures (1.8 K), there is significant spin relaxation which decreases as a function of both the applied longitudinal magnetic field and increasing temperature. The results indicate that there are spatially inhomogeneous electronic moments that fluctuate with a wide distribution of correlation times. Possible explanations are discussed.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.5017768