A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL

Abstract

We present a new set up 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 3 crystal analysers 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 set-up at overall ~180 meV resolution in a study of ground-state and photoexcited (at 400 nm) honeycomb 5d iridate $\alpha$-$\mathrm{L}{\mathrm{i}}_2\mathrm{Ir}{\mathrm{O}}_3$. Steady-state RIXS spectra at the Iridium $L_3$-edge (11.214 keV) have been collected and are in very good agreement with data collected at synchrotrons. The time-resolved RIXS transients (pumped minus unpumped spectra) 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 intersite transition scattering efficiency, which we associate to a transient screening of the on-site Coulomb interaction.

arXiv comment17 + 7 pages, 4 + 6 figures

References in corpus (49)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Kitaev-Heisenberg Model on Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides $A_2$IrO${}_3$
• Kitaev quantum spin liquid - concept and materialization
• Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials
• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Nonthermal pathways to ultrafast control in quantum materials
• Physics of the Kitaev model: fractionalization, dynamical correlations, and material connections
• Isospin Dynamics in Sr2IrO4 : Forging Links to Cuprate Superconductivity
• Evidence for a Field-induced Quantum Spin Liquid in $\alpha$-RuCl${}_3$
• Crystal field splitting and correlation effect on the electronic structure of A2IrO3
• Na2IrO3 as a spin-orbit-assisted antiferromagnetic insulator with a 340 meV gap
• Inverse magneto-refraction as a mechanism for laser modification of spin-spin exchange parameters and subsequent terahertz emission from iron oxides
• Evidence for metastable photo-induced superconductivity in K${}_3$C${}_{60}$
• Ultrafast energy and momentum resolved dynamics of magnetic correlations in photo-doped Mott insulator Sr${}_2$IrO${}_4$
• Incommensurate Counterrotating Magnetic Order Stabilized by Kitaev Interactions in the Layered Honeycomb $\alpha$-Li${}_2$IrO${}_3$
• Doping a spin-orbit Mott Insulator: Topological Superconductivity from the Kitaev-Heisenberg Model and possible application to (Na2/Li2)IrO3
• Asymmetry of collective excitations in electron and hole doped cuprate superconductors
• Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scattering
• Ultrafast Angle-Resolved Photoemission Spectroscopy of Quantum Materials
• Fingerprints of Kitaev physics in the magnetic excitations of honeycomb iridates
• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• Multi-orbital charge density wave excitations and concomitant phonon anomalies in Bi${}_2$Sr${}_2$LaCuO${}_{6+\delta }$
• Theoretical Understanding of Photon Spectroscopies in Correlated Materials In and Out of Equilibrium
• Hubbard exciton revealed by time-domain optical spectroscopy
• Resonant inelastic x-ray incarnation of Young's double-slit experiment
• Ultrafast renormalization of the onsite Coulomb repulsion in a cuprate superconductor
• Electronic excitations in the edge-shared relativistic Mott insulator: Na${}_2$IrO${}_3$
• Theory for Time-Resolved Resonant Inelastic X-ray Scattering
• Pressure-driven collapse of the relativistic electronic ground state in a honeycomb iridate
• Laser-Induced Transient Magnons in Sr3Ir2O7 Throughout the Brillouin Zone
• High-pressure versus isoelectronic doping effect on the honeycomb iridate Na${}_2$IrO${}_3$
• Floquet engineering of Kitaev quantum magnets
• Ultrafast enhancement of ferromagnetic spin exchange induced by ligand-to-metal charge transfer
• Time-Resolved Resonant Inelastic X-Ray Scattering in a Pumped Mott Insulator
• High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb $\alpha$-Li${}_2$IrO${}_3$
• Light-Induced Control of Magnetic Phases in Kitaev Quantum Magnets
• Orbital dynamics during an ultrafast insulator to metal transition
• Chemical- and hydrostatic-pressure effects on the Kitaev honeycomb material Na${}_2$IrO${}_3$
• Simulation of time-dependent resonant inelastic X-ray scattering using non-equilibrium dynamical mean-field theory
• A tunable time-resolved spontaneous Raman spectroscopy setup for probing ultrafast collective excitation and quasiparticle dynamics in quantum materials
• Nearly itinerant electronic groundstate in the intercalated honeycomb iridate Ag${}_3$LiIr${}_2$O${}_6$
• Imaging the ultrafast coherent control of a skyrmion crystal
• Evidence for photoinduced sliding of the charge-order condensate in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$
• Observation of a new light-induced skyrmion phase in the Mott insulator Cu2OSeO3
• Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS
• Optical signature of the pressure-induced dimerization in the honeycomb iridate $\alpha$-Li${}_2$IrO${}_3$
• Honeycomb oxide heterostructure: a new platform for Kitaev quantum spin liquid
• Optical magnons with dominant bond-directional exchange interactions in a honeycomb lattice iridate $\alpha$-Li${}_2$IrO${}_3$
• Dynamical resonance quench and Fano interference in spontaneous Raman scattering from quasiparticle and collective excitations

Cited by in corpus (1)

• Signatures of Floquet Engineering in the proximal Kitaev Quantum Spin Liquid H${}_3$LiIr${}_2$O${}_6$ by tr-RIXS