Nature of magnetism in thiol-capped gold nanoparticles investigated with Muon spin rotation
journal contribution
posted on 2024-11-15, 15:15 authored by M H Dehn, D J Arseneau, T Buck, David CortieDavid Cortie, D G Fleming, Shirin King, W A MacFarlane, Andrew M McDonagh, R M L Mcfadden, David Mitchell, R F KieflMuon 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.