Publications by authors named "Andrea Amorese"
Article Synopsis
- This study explores the dual nature of U electrons in various compounds (U M = Pd, Ni, Ru, Fe) using advanced X-ray techniques, revealing a mix of localized and delocalized states.
- The findings suggest a common atomic-like state defined by the U configuration, with variations in U 5f characteristics indicating a trend towards increased electron itineracy from Pd to Fe.
- These electronic states help explain significant magnetic behaviors and may guide future experiments aimed at inducing hidden order or superconductivity in similar U compounds.
The one-dimensional cobaltate Ca[Formula: see text]Co[Formula: see text]O[Formula: see text] is an intriguing material having an unconventional magnetic structure, displaying quantum tunneling phenomena in its magnetization. Using a newly developed experimental method, [Formula: see text]-core-level non-resonant inelastic x-ray scattering ([Formula: see text]-NIXS), we were able to image the atomic Co [Formula: see text] orbital that is responsible for the Ising magnetism in this system. We can directly observe that corrections to the commonly accepted ideal prismatic trigonal crystal field scheme occur in Ca[Formula: see text]Co[Formula: see text]O[Formula: see text], and it is the complex [Formula: see text] orbital occupied by the sixth electron at the high-spin Co[Formula: see text] ([Formula: see text]) sites that generates the Ising-like behavior.
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