Resonant inelastic x-ray scattering (RIXS) allows to study electronic and magnetic excitations and their momentum and energy dependencies. For example, the absence of dd excitations at the interfaces of KTaO3 films suggests a deficiency of localized Ta 5d electrons [X. Cai et al., Phys. Rev. B 108, 235167 (2023)]. In [(SrIrO3)m/(SrTiO3)l] heterostructures [E. Paris et al., Phys. Rev. Lett. 135, 186506 (2025)] magnetic modes and spin-orbit excitons were found to persist across the confinement-driven metal to insulator transition.
RIXS interference, the inelastic scattering analogue to Young’s double slit experiment, has been proposed to enhance the intensity in energy spectra at ~1 eV in La2-xBaxCuO4 (LBCO) at the charge order wave vector [W. Schülke and C. Sternemann, Phys. Rev. B 84, 085143 (2011)]. We investigate this hypothesis by studying the momentum dependent energy spectra in LBCOboth below and above the charge order onset.
Please register to this doodle if you want to join for pizza!
Location: Stuckelberg, Ecole de Physique
Time: Tuesday 18 November 2025, 12:30 for pizza, 13:00 start discussion