The scientific aim of this project is to study new quantum spin liquids through the controlled introduction of structural defects. Recently it has been proposed that for non-Kramers spin ice materials, nonmagnetic disorder tunes from a classical spin-ice material to a true quantum spin liquid with long-range entanglement. We shall measure the diffuse scattering from selected large single crystals, and separate the structural and magnetic diffuse scattering using polarised neutrons for quantitative comparison with Monte Carlo simulations.
Neutron scattering experiments will be performed at the Institut Laue-Langevin in France, and the ISIS Facility in the UK. We expect to directly test theoretical predictions, to determine how details of the defect structures affect the results, and to explore the effects of long-range ordering of defects.
The PhD project will be located at Royal Holloway, University of London. Applicants should have a degree in a Physics discipline. Academic knowledge of condensed matter physics will be an advantage. Further information can be obtained from Professor Jon Goff, telephone +44 (0)1784 443485, e-mail [email protected].