• Publications
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Ultrasound attenuation in Sr(2)RuO(4): an angle-resolved study of the superconducting gap function.
TLDR
It is shown that the power law behavior of alpha at temperatures down to T(c)/30 clearly indicates the presence of nodes in the gap, and an enormous anisotropy of alpha is found in the basal plane of the tetragonal structure in the normal state.
Spinless Impurities in High- T c Cuprates: Kondo-Like Behavior
We compare the effects of in-plane nonmagnetic ${\mathrm{Li}}^{+}$ and ${\mathrm{Zn}}^{2+}$ impurities on the normal state of high- ${T}_{c}$ cuprates. ${}^{89}\mathrm{Y}$ NMR shows that the extra
Cooperative Paramagnetism in the Geometrically Frustrated Pyrochlore Antiferromagnet Tb 2 Ti 2 O 7
W. A. MacFarlane, 2 N. P. Raju, 4 J. E. Sonier, 2 I. Swainson, 5 and Z. Tun5 1Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1 2Department of Physics and
β-NMR measurements of lithium ion transport in thin films of pure and lithium-salt-doped poly(ethylene oxide).
TLDR
It is proposed that the hopping of Li(+) between cages involves motion of the polymer but that it is only for long-range diffusion where the α relaxation plays an important role.
Nature of weak magnetism in SrTiO3/LaAlO3 multilayers.
TLDR
Results show that the magnetism at the interface depends strongly on the thickness of the spacer layer, and that a minimal thickness of ~4-6 unit cells is required for the appearance of magnetism.
Implanted-ion βNMR: A new probe for nanoscience.
  • W. A. MacFarlane
  • Chemistry, Medicine
    Solid state nuclear magnetic resonance
  • 1 June 2015
TLDR
Technical aspects of implanted-ion β-NMR, combined with the low energy ion beam, enable depth resolved NMR measurements in crystals, thin films and multilayers on depth scales of 2-200 nm.
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
β-detected nuclear quadrupole resonance with a low-energy beam of 8Li+
Z. Salman,1 E. P. Reynard,1 W. A. MacFarlane,2 K. H. Chow,3 J. Chakhalian,1,4 S. R. Kreitzman,1 S. Daviel,1 C. D. P. Levy,1 R. Poutissou,1 and R. F. Kiefl1,4,5 1TRIUMF, 4004 Wesbrook Mall, Vancouver,
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