Transition metal oxides have been widely studied over the past few decades owing to the unprecedented variety of electronic and magnetic properties arising from the partially filled d orbitals. 5d materials, and in particular iridates, have recently attracted increasing attention due to the strong spin orbit coupling which provides an additional competing energy scale. Our laboratory provides a unique combination of setups that allows us to grow materials layer by layer, by molecular beam epitaxy (MBE) and study their electronic structure in situ, using angle-resolved photoemission spectroscopy (ARPES). I will show in particular the cases of IrO2, SrIrO3 and Sr2IrO4, as well as artificial heterostructures and highlight their relevance in the field of topological materials. I will also discuss future applications of IrO2 in energy efficient spintronic devices and how slight alterations of the crystal structure influence the spin and catalytic properties.
Jocienne Nelson / Cornell University
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