Time and place: 2019.11.22, 15:00 pm, Wuhan National High Magnetic Field Center B206

Presenter: Marc Janoschek

Title: Dissecting Metallic Quantum Matter with Neutrons

Abstract：

When many quantum particles interact in a solid frequently unexpected collective behavior emerges that is extremely difficult to predict. A prime example are metals near magnetic quantum phase transitions, notably magnetic instabilities in the zero-temperature limit that are accessed by non-thermal tuning parameters such as pressures and magnetic fields, at which strong electronic correlations manifest via new energy scales, as well as the emergence of novel quantum matter states. Examples include charge stripe and loop order, electronic nematic order, “hidden” order, multipolar order, and unconventional superconductivity. The SINQ neutron source at PSI provides a unique toolset for high-precision studies of such quantum matter states with access to the underlying energy scales and the associated collective behavior. I will provide an overview of current frontiers and developments in the field. I will summarize the progress made by recent neutron scattering experiments carried out by us and others and discuss how they offer the potential for exciting break throughs in the understanding of metallic quantum matter, notably in the extreme of high magnetic fields.