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

Journal Article


Abstract


  • 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.

UOW Authors


  •   Dehn, M (external author)
  •   Arseneau, D J. (external author)
  •   Buck, T (external author)
  •   Cortie, David
  •   Fleming, D G. (external author)
  •   King, Shirin (external author)
  •   Macfarlane, W A. (external author)
  •   McDonagh, Andrew M. (external author)
  •   Mcfadden, R M. L. (external author)
  •   Mitchell, David
  •   Kiefl, R F. (external author)

Publication Date


  • 2018

Citation


  • 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. (2018). Nature of magnetism in thiol-capped gold nanoparticles investigated with Muon spin rotation. Applied Physics Letters, 112 (5), 053105-1-053105-5.

Scopus Eid


  • 2-s2.0-85041387165

Start Page


  • 053105-1

End Page


  • 053105-5

Volume


  • 112

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • 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.

UOW Authors


  •   Dehn, M (external author)
  •   Arseneau, D J. (external author)
  •   Buck, T (external author)
  •   Cortie, David
  •   Fleming, D G. (external author)
  •   King, Shirin (external author)
  •   Macfarlane, W A. (external author)
  •   McDonagh, Andrew M. (external author)
  •   Mcfadden, R M. L. (external author)
  •   Mitchell, David
  •   Kiefl, R F. (external author)

Publication Date


  • 2018

Citation


  • 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. (2018). Nature of magnetism in thiol-capped gold nanoparticles investigated with Muon spin rotation. Applied Physics Letters, 112 (5), 053105-1-053105-5.

Scopus Eid


  • 2-s2.0-85041387165

Start Page


  • 053105-1

End Page


  • 053105-5

Volume


  • 112

Issue


  • 5

Place Of Publication


  • United States