IRG-1: Oxide

Spin-Orbit Coupling in Correlated Materials: Novel Phases and Phenomena

IRG-1 is investigating materials where spin-orbit coupling (SOC) and electron-electron (Coulomb) correlations are of comparable magnitude, and the subsequent emergence of novel electronic phases in those materials. Using chemistry, structure, epitaxial strain IRG-OXIDES_Dirac Dispersionand d-electron count, IRG-1 tunes fundamental interactions in 5d based materials to discover new phases and give insight into their novel properties. Among the remarkable new phases that can arise are axion insulators (predicted to possess unusual magnetoelectric properties) and Weyl semimetals (predicted to have disconnected “Fermi arcs” on the surface of the material). IRG-1 is going beyond the widely studied d5 iridates to explore d-electron counts from d2 to d4.

Goals:

  • Electron correlations + spin orbit coupling
    • Correlations→high Tc and heavy fermions
    • Spin-orbit coupling→topological insulators
  • Tune competition→new phenomena

IRG-OXIDES_Our Focus

More information on IRG-1

IRG-1 Faculty

IRG-OXIDES_Fermi Arcs