Magnetic and transport measurements at very high pressures and low temperatures
Many Uranium based compounds exhibit a host of exciting physical effects including quantum criticality that can be reached with pressure as a tuning parameter. This talk concentrates on the development of making high pressure measurements to reveal new details in the phase diagrams of uranium compounds. Through the development of a diamond anvil cell AC-susceptometer set-up AC magnetic susceptibility measurements can be made. The method makes use of pick-up micro coil placed within the pressure region of a diamond anvil cell surrounding the sample. Secondly using the well known 4 point probe method by placing 4 wires in the pressure region resistivity measurements can be made. This can be further extended for Hall effect measurements. Accurate determination of pressure, temperature, magnetic transitions and bulk electronic properties will allow us to extend the phase diagrams of Uranium based compounds to previously unexplored regions accurately.
This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..