Date/Time
Date(s) - 13/01/2010
3:20 pm - 4:20 pm

Title: Time-of-flight neutron scattering and 2D spin correlations in 3D crystals

Speaker: Dr. Bruce Gaulin, McMaster University

Institute:

Location: ABB 102

Description:

New instrumentation for neutron science is being built on an unprecedented scale, particularly with the advent of the Spallation Neutron Source, where I spent much of the last two years. The new instrumentation utilizes the time-structure of the scattering and position sensitive area detectors and possesses figures-of-merit between 1-2 orders of magnitude higher than that obtainable only a few years ago. As I’ll describe, these new techniques are very well suited to study exotic magnets which fail to develop long range order at low temperatures – as occurs in both layered quantum magnets and geometrically-frustrated magnets. I’ll illustrate these phenomena borrowing results from the (upcoming) PhD and MSc theses of Kate Ross, Greg Van Gastel, and Jerod Wagman.