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A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL

Chen, Hui-Yuan ; Versteeg, Rolf B. ; Mankowsky, Roman ; Puppin, Michele ; Leroy, Ludmila ; Sander, Mathias ; Deng, Yunpei ; Oggenfuss, Roland Alexander ; Zamofing, Thierry ; Böhler, Pirmin ; Pradervand, Claude ; Mozzanica, Aldo ; Vetter, Seraphin ; Smolentsev, Grigory ; Kerkhoff, Linda ; Lemke, Henrik T. ; Chergui, Majed ; Mancini, Giulia F.

Structural dynamics (Melville, N.Y.), 2024-03, Vol.11 (2), p.024308-024308 [Periódico revisado por pares]

United States: American Institute of Physics, Inc

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Título:
A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL
Autor: Chen, Hui-Yuan ; Versteeg, Rolf B. ; Mankowsky, Roman ; Puppin, Michele ; Leroy, Ludmila ; Sander, Mathias ; Deng, Yunpei ; Oggenfuss, Roland Alexander ; Zamofing, Thierry ; Böhler, Pirmin ; Pradervand, Claude ; Mozzanica, Aldo ; Vetter, Seraphin ; Smolentsev, Grigory ; Kerkhoff, Linda ; Lemke, Henrik T. ; Chergui, Majed ; Mancini, Giulia F.
Assuntos: Analyzers ; Bandwidths ; Electrons ; Energy ; Experiments ; Inelastic scattering ; Iridium ; Lasers ; Light ; Optical pumping ; Sensors ; Spectra ; Spectrum allocation ; Spectrum analysis ; Superconductivity ; Synchrotrons ; Temporal resolution ; X-ray scattering ; X-rays
É parte de: Structural dynamics (Melville, N.Y.), 2024-03, Vol.11 (2), p.024308-024308
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: We present a new setup for resonant inelastic hard x-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R = 0.5 m Johann-type spectrometer can be equipped with up to three crystal analyzers and allows efficient collection of RIXS spectra. Optical pumping for time-resolved studies can be realized with a broad span of optical wavelengths. We demonstrate the performance of the setup at an overall ∼180 meV resolution in a study of ground-state and photoexcited (at 400 nm) honeycomb 5d iridate α-Li2IrO3. Steady-state RIXS spectra at the iridium L3-edge (11.214 keV) have been collected and are in very good agreement with data collected at synchrotrons. The time-resolved RIXS transients exhibit changes in the energy loss region <2 eV, whose features mostly result from the hopping nature of 5d electrons in the honeycomb lattice. These changes are ascribed to modulations of the Ir-to-Ir inter-site transition scattering efficiency, which we associate to a transient screening of the on-site Coulomb interaction.
Editor: United States: American Institute of Physics, Inc
Idioma: Inglês

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A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL

United States: American Institute of Physics, Inc

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