Physics Colloquium - Muons as a Probe of Condensed Matter: a Powerful Complement to Neutron Scattering

Gregory MacDougall, University of Illinois at Urbana-Champaign


Muons as a Probe of Condensed Matter: a Powerful Complement to Neutron Scattering

Muon spin rotation (μSR) is a technique which uses the parity violating decay of the muon to measure magnetic fields and fluctuations inside condensed matter systems. Over the past forty years, it has made meaningful contributions to the fields of magnetism, superconductivity, quantum diffusion, semiconductor physics, and chemistry. The recent development of low-energy muon beams, make μSR one of the only depth-resolved probes of magnetism at surfaces or in thin films. Partially as a result of this new development, the construction of new μSR facilities is being discussed in China, Korea and the United States, while capacity is being expanded in existing sources. I will give an introduction to μSR, and discuss the scientific questions that can be address with the technique. Example data will be given, with particular attention paid to questions of interest to the neutron scattering community and the complementary information obtained by muons and neutrons.

Monday, 14 October, 2013


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