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Bruce D. Gaulin  Professor, Brockhouse Chair in the Physics of Materials Department of Physics and Astronomy  McMaster University  Hamilton, ON  L8S 4M1  Office:  ABB- 238  Lab: ABB-251  Phone:  (905) 525-9140 x24362 (office) x27518 (lab)  FAX:    (905) 546-1252  E-mail: gaulin@nightshade.physics.mcmaster.ca  Research Area: Condensed Matter Experiment

 

 Research Interests

Bruce Gaulin did his undergraduate work at McGill University and then went on to McMaster for his graduate work where he received his Ph.D. in 1986. He then joined the scientific staff in the neutron scattering group of Oak Ridge National Laboratory, and stayed there until returning to McMaster as a faculty member in 1988.

Dr. Gaulin's research is centred on applying neutron scattering techniques to studying cooperative phenomena near phase transitions in condensed matter. Several main projects comprise this work. One of these involves using neutron scattering to probe phenomena very close to the phase transition in magnetic materials with competing interactions. In one such material, CsMnBr₃, a combination of antiferromagnetic interactions and a stacked triangular lattice guarantees that the low temperature, ordered state of the material will be highly "frustrated". Another topic involves using the recently-discovered resonant magnetic X-ray scattering technique to study the development of magnetic long range order in model magnetic materials.

Neutron and X-ray scattering techniques can be applied to studying a remarkably wide variety of problems in condensed matter physics. Dr. Gaulin pursues these studies both locally at McMaster and at national and international neutron and synchrotron X-ray scattering research centres.
 

Selected Papers

• "Glassy Statics and Dynamics in the Geometrically Frustrated Pyrochlore Antiferromagnet Y₂Mo₂O₇ ", J. S. Gardner, B.D. Gaulin, S.H. Lee, C. Broholm, N.P. Raju and J.E. Greedan , 1999 Phys. Rev. Lett., 83, 211-214.
  
  
• "Neutron Scattering from Soft Hydrogenous Materials", B.D. Gaulin and J. Katsaras, 1997, Phys. in Canada, 53, 247-255.
  
  
• "X-Ray Scattering Study of the Magnetic Structure Near the (001) Surface of UO₂", G.M. Watson, D. Gibbs, G.H. Lander, B. D. Gaulin, L.E. Berman, H.J. Matzke, and W. Ellis, 1996, Phys. Rev. Lett., 77, 751-754.
  
  
• "Critical Phenomena of the Spin Peierls Transition in CuGeO₃, " M. D. Lumsden, B.D. Gaulin, H. Dabkowska , and M.L. Plumer, 1996, Phys. Rev. Lett., 76, 4919-4922.

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