Resonant inelastic X-ray scattering

FMF de Groot, MW Haverkort, H Elnaggar… - Nature Reviews …, 2024 - nature.com
Resonant inelastic X-ray scattering (RIXS) is a powerful technique that combines
spectroscopy and inelastic scattering to probe the electronic structure of materials. RIXS is …

Nature of excitons and their ligand-mediated delocalization in nickel dihalide charge-transfer insulators

CA Occhialini, Y Tseng, H Elnaggar, Q Song, M Blei… - Physical Review X, 2024 - APS
The fundamental optical excitations of correlated transition-metal compounds are typically
identified with multielectronic transitions localized at the transition-metal site, such as dd …

Electronic parameters in cobalt-based perovskite-type oxides as descriptors for chemocatalytic reactions

J Simböck, M Ghiasi, S Schönebaum, U Simon… - Nature …, 2020 - nature.com
Perovskite-type transition metal (TM) oxides are effective catalysts in oxidation and
decomposition reactions. Yet, the effect of compositional variation on catalytic efficacy is not …

Collective modes in excitonic magnets: Dynamical mean-field study

D Geffroy, J Kaufmann, A Hariki, P Gunacker… - Physical review …, 2019 - APS
We present a dynamical mean-field study of dynamical susceptibilities in the two-band
Hubbard model. Varying the model parameters we analyze the two-particle excitations in the …

approach to resonant inelastic x-ray scattering in correlated materials

A Hariki, M Winder, T Uozumi, J Kuneš - Physical Review B, 2020 - APS
We present a computational study of resonant inelastic x-ray scattering (RIXS) at the L
edges of selected 3 d transition-metal oxides using a combination of the density-functional …

A New Era of Excitonic Insulators

T Kaneko, Y Ohta - Journal of the Physical Society of Japan, 2025 - journals.jps.jp
The fundamental idea of the excitonic insulator (EI) driven by electron–hole correlations in
narrow-gap semiconductors or semimetals was originally proposed in the 1960s, and only …

Origin of ferrimagnetism and the effect of octahedral tilting in double-perovskite compound Sr2CoRuO6

J Ding, LW Wen, Y Liu, Y Zhang - Journal of Magnetism and Magnetic …, 2021 - Elsevier
Density functional theory simulations were used to investigate double-perovskite Sr 2
CoRuO 6 for its structure and magnetic properties. Calculated results show that rocksalt B …

Low-energy orbital excitations in strained films

RP Wang, J Geessinck, H Elnaggar, YA Birkhölzer… - Physical Review B, 2019 - APS
We present 90 meV resolved Co 2 p 3 d resonant inelastic x-ray scattering linear dichroism
spectra of strained LaCoO 3 films and a LaCoO 3 single crystal. A polarization-dependent …

Monitoring ultrafast metallization in LaCoO3 with femtosecond soft x-ray spectroscopy

M Izquierdo, M Karolak, D Prabhakaran… - Communications …, 2019 - nature.com
The study of ultrafast dynamics is a new tool to understand and control the properties of
correlated oxides. By enhancing some properties and realizing new dynamically excited …

Damping of spinful excitons in by thermal fluctuations: Theory and experiment

A Hariki, RP Wang, A Sotnikov, K Tomiyasu, D Betto… - Physical Review B, 2020 - APS
We present Co L 3-edge resonant inelastic x-ray scattering (RIXS) of bulk LaCoO 3 across
the thermally induced spin-state crossover around 100 K. Owing to a high energy resolution …