X-ray vision of spins, charges and orbitals for understanding emergent electronic states in complex oxides

Speaker: Mark P. M. Dean, Brookhaven National Laboratory

When: November 29, 2018 (Thu), 12:30PM to 01:30PM (add to my calendar)
Location: SCI 328
Hosted by: Karl Ludwig

This event is part of the Biophysics/Condensed Matter Seminar Series.

The charge, spin and orbital degrees of freedom play a crucial role in determining the remarkable properties of transition metal oxide materials, but probing these degrees of freedom is often challenging. In this talk, I will describe how resonant inelastic x-ray scattering (RIXS) opens up important new possibilities for measuring these degrees of freedom even in extreme cases such as atomically thin heterostructures and ultra-fast transient states. This includes observing precursor charge correlations in cuprates [1], determining how orbitals are modified within LaNiO3-based heterostructures [2] and characterizing the spin behavior within the transient state of photo-doped Sr2IrO4 [3].

References 1. H. Miao et al., Proc. Natl. Acad. Sci. U.S.A 114, 12430–12435 (2017); H. Miao et al., H. Miao et al., Phys. Rev. X 8, 011008 (2018) 2. G. Fabbris et al., Phys. Rev. Lett. 117, 147401 (2016); G. Fabbris et al., Phys. Rev. Lett. 118, 156402 (2017) 3. M. P. M. Dean et al., Nature Materials 15, 601-605 (2016); Y. Cao et al., arXiv: 1809.06288