5 papers · 1 filter
Spectroscopic evidence for a molecular orbital Kondo insulator
Ke-Jun Xu, Kuan H. Hsu, Nathan Giles-Donovan +13
A Kondo insulator (KI) is a prototypical example of a highly entangled phase of matter, where many-body interactions between local moments and delocalized electrons engender the no…
Machine Learning to Predict Spectral Anisotropy in Valence-to-Core X-ray Emission Spectroscopy
Charles A. Cardot, John R. Tichenor, Seth M. Shjandemaar +3
Polarization analysis in x-ray spectroscopy provides an orientation dependent sensitivity to local bonding environments. For a cluster of atoms, polarization sensitivity is most of…
X-ray Emission Spectropolarimetry of Strongly Anisotropic Single Crystal Systems using a Rowland Circle Geometry
Jared E. Abramson, Charles A. Cardot, Josh J. Kas +6
Polarization dependence has historically seen extensive use in x-ray spectroscopy to determine magnetic and local geometric properties, but more broadly as a way to gain extra sens…
Dispersing and non-dispersing satellites in the photoemission spectra of aluminum
Jianqiang Sky Zhou, Lucia Reining, Alessandro Nicolaou +9
Satellites in electronic spectra are pure many-body effects, and their study has been of increasing interest in both experiment and theory. The presence of satellites due to plasmo…
Cumulant Green's function calculations of plasmon satellites in bulk sodium: influence of screening and the crystal environment
Jianqiang Sky Zhou, Matteo Gatti, J. J. Kas +2
We present ab initio calculations of the photoemission spectra of bulk sodium using different flavors of the cumulant expansion approximation for the Green's function. In particula…