Theory of Correlated Quantum Matter
Quantum mechanics is responsible for some really weird phenomena at the nanoscale. Our research deals with theoretical and computational studies of how interactions between quantum particles leads to remarkable new collective effects at sizes from the nanoscale to the macroscale in solid state materials and ultracold atomic gases.
Solid State Materials:
We are interested in quantum magnetism, spin liquids, superconductivity, and the interplay of topology and interaction effects in a wide range of transition metal oxides. Our most recent work is on understanding high temperature metallic ferromagnetism, Mott insulators with giant exchange anisotropies, novel topological phases, and half-metals with potential spintronic applications.
Atoms cooled to nanoKelvin temperatures and placed in an optical lattice act as "fat electrons", displaying many of the interesting phases exhibited by electrons in solids. We are particularly interested in unusual magnetism, topological phases, and dynamics of such Bose or Fermi atoms with a view to explore issues of interest in solid state materials.