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Neutron Spin Echo spectroscopy (NSE) is extensively used for the study of a large variety of slow motion phenomena (critical slowing down, relaxation effects, disordered dynamics, soft matter), which occur on a mesoscopic time scale between microscopic collision times and macroscopic dynamics. NSE applications in the field of magnetism benefit from the unique combination of high energy resolution with neutron polarization analysis, which allows a direct and unambiguous separation of the (often) weak magnetic scattering from all other structural contributions. The technique will be introduced and new results obtained in collaboration with the Cologne group on the multiferroics TbMnO3 and MnWO3 will be discussed.

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Catherine Pappas, TU Delft
Seminar Room, Institute for Theoretical Physics (Main Building)
Contact: Markus Braden