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

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Date and time Jan 13, 2020
from 11:00 AM to 12:00 PM
Location 60 St. George Street, MP 606
Host Young-June Kim

Mark Dean

Brookhaven National Laboratory

Many of the most remarkable properties of quantum materials come from the interplay of multiple charge, orbital and spin degrees of freedom. Probing all of these with a single technique is consequently highly desirable. In this talk, I will describe how resonant inelastic x-ray scattering (RIXS) opens up important new possibilities for measuring these degrees of freedom. This includes observing precursor charge density wave correlations in cuprates [1], observing orbital hybridization in iridates [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., Phys. Rev. X 8, 011008 (2018); H. Miao et al., Phys. Rev. X 9, 031042 (2019)
  2. Y. Wang et al., Phys. Rev. Lett. 122, 106401 (2019)
  3. M. P. M. Dean et al., Nature Materials 15, 601-605 (2016); Y. Cao et al., Phil. Trans. R. Soc. A 377: 20170480 (2019); D. Mazzone et al., in preparation.
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