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New Opportunities in Correlated Quantum Materials with Strong Spin-Orbit Interactions

Kyle Shen, Cornell University
Thursday, January 14, 2016 - 12:30pm to 1:30pm
PAT C-520

Spin-orbit interactions have emerged as a
crucial component to realizing novel phenomena in systems such as topological
insulators and transition metal dichalcogenides. Here I will discuss how
spin-orbit interactions can likewise be employed as a new "knob" for
controlling the properties of quantum materials with strong electron-electron
correlations. In particular, I will describe our studies of the family of perovskite
iridates, where the electronic and magnetic properties are determined by the
iridium 5d orbitals which possess both sizable spin-orbit interactions as well
as on-site Coulomb repulsion. Through a combination of oxide molecular beam
epitaxy and angle-resolved photoemission spectroscopy, we explore how the
electronic structure and properties of the iridates are controlled by the
interplay of dimensionality, spin-orbit interactions, and electron