Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity

M. H. Dehn; D. J. Arseneau; P. Böni; M. D. Bridges; T. Buck; D. L. Cortie; D. G. Fleming; J. A. Kelly; W. A. MacFarlane; M. J. MacLachlan; R. M.L. McFadden; G. D. Morris; P. X. Wang; J. Xiao; V. M. Zamarion; R. F. Kiefl

doi:10.1063/1.4967460

Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity

M. H. Dehn, D. J. Arseneau, P. Böni, M. D. Bridges, T. Buck, D. L. Cortie, D. G. Fleming, J. A. Kelly, W. A. MacFarlane, M. J. MacLachlan, R. M.L. McFadden, G. D. Morris, P. X. Wang, J. Xiao, V. M. Zamarion, R. F. Kiefl

Natural Sciences

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Chemisorption of muonium onto the surface of gold nanoparticles has been observed. Muonium (μ+e−), a light hydrogen-like atom, reacts chemically with uncapped 7 nm gold nanoparticles embedded in mesoporous silica (SBA-15) with a strong temperature-dependent rate. The addition rate is fast enough to allow coherent spin transfer into a diamagnetic muon state on the nanoparticle surface. The muon is well established as a sensitive probe of static or slowly fluctuating magnetic fields in bulk matter. These results represent the first muon spin rotation signal on a nanoparticle surface or any metallic surface. Only weak magnetic effects are seen on the surface of these Au nanoparticles consistent with Pauli paramagnetism.

Original language	English
Article number	181102
Journal	Journal of Chemical Physics
Volume	145
Issue number	18
DOIs	https://doi.org/10.1063/1.4967460
State	Published - 14 Nov 2016

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Dehn, M. H., Arseneau, D. J., Böni, P., Bridges, M. D., Buck, T., Cortie, D. L., Fleming, D. G., Kelly, J. A., MacFarlane, W. A., MacLachlan, M. J., McFadden, R. M. L., Morris, G. D., Wang, P. X., Xiao, J., Zamarion, V. M., & Kiefl, R. F. (2016). Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity. Journal of Chemical Physics, 145(18), Article 181102. https://doi.org/10.1063/1.4967460

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title = "Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity",

abstract = "Chemisorption of muonium onto the surface of gold nanoparticles has been observed. Muonium (μ+e−), a light hydrogen-like atom, reacts chemically with uncapped 7 nm gold nanoparticles embedded in mesoporous silica (SBA-15) with a strong temperature-dependent rate. The addition rate is fast enough to allow coherent spin transfer into a diamagnetic muon state on the nanoparticle surface. The muon is well established as a sensitive probe of static or slowly fluctuating magnetic fields in bulk matter. These results represent the first muon spin rotation signal on a nanoparticle surface or any metallic surface. Only weak magnetic effects are seen on the surface of these Au nanoparticles consistent with Pauli paramagnetism.",

author = "Dehn, {M. H.} and Arseneau, {D. J.} and P. B{\"o}ni and Bridges, {M. D.} and T. Buck and Cortie, {D. L.} and Fleming, {D. G.} and Kelly, {J. A.} and MacFarlane, {W. A.} and MacLachlan, {M. J.} and McFadden, {R. M.L.} and Morris, {G. D.} and Wang, {P. X.} and J. Xiao and Zamarion, {V. M.} and Kiefl, {R. F.}",

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year = "2016",

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doi = "10.1063/1.4967460",

language = "English",

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Dehn, MH, Arseneau, DJ, Böni, P, Bridges, MD, Buck, T, Cortie, DL, Fleming, DG, Kelly, JA, MacFarlane, WA, MacLachlan, MJ, McFadden, RML, Morris, GD, Wang, PX, Xiao, J, Zamarion, VM & Kiefl, RF 2016, 'Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity', Journal of Chemical Physics, vol. 145, no. 18, 181102. https://doi.org/10.1063/1.4967460

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T2 - Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity

AU - Dehn, M. H.

AU - Arseneau, D. J.

AU - Böni, P.

AU - Bridges, M. D.

AU - Buck, T.

AU - Cortie, D. L.

AU - Fleming, D. G.

AU - Kelly, J. A.

AU - MacFarlane, W. A.

AU - MacLachlan, M. J.

AU - McFadden, R. M.L.

AU - Morris, G. D.

AU - Wang, P. X.

AU - Xiao, J.

AU - Zamarion, V. M.

AU - Kiefl, R. F.

PY - 2016/11/14

Y1 - 2016/11/14

N2 - Chemisorption of muonium onto the surface of gold nanoparticles has been observed. Muonium (μ+e−), a light hydrogen-like atom, reacts chemically with uncapped 7 nm gold nanoparticles embedded in mesoporous silica (SBA-15) with a strong temperature-dependent rate. The addition rate is fast enough to allow coherent spin transfer into a diamagnetic muon state on the nanoparticle surface. The muon is well established as a sensitive probe of static or slowly fluctuating magnetic fields in bulk matter. These results represent the first muon spin rotation signal on a nanoparticle surface or any metallic surface. Only weak magnetic effects are seen on the surface of these Au nanoparticles consistent with Pauli paramagnetism.

AB - Chemisorption of muonium onto the surface of gold nanoparticles has been observed. Muonium (μ+e−), a light hydrogen-like atom, reacts chemically with uncapped 7 nm gold nanoparticles embedded in mesoporous silica (SBA-15) with a strong temperature-dependent rate. The addition rate is fast enough to allow coherent spin transfer into a diamagnetic muon state on the nanoparticle surface. The muon is well established as a sensitive probe of static or slowly fluctuating magnetic fields in bulk matter. These results represent the first muon spin rotation signal on a nanoparticle surface or any metallic surface. Only weak magnetic effects are seen on the surface of these Au nanoparticles consistent with Pauli paramagnetism.

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JO - Journal of Chemical Physics

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Communication: Chemisorption of muonium on gold nanoparticles: A sensitive new probe of surface magnetism and reactivity

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