Speaker
Dr
C Monney
(Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland,)
Description
We have performed Resonant Inelastic X-ray Scattering (RIXS) at the Cu L- and O K-resonance at the ADRESS beamline of the Swiss Light Source on the quasi-one-dimensional cuprates Li2CuO2 and CuGeO3, prototype edge-sharing chain compounds showing different magnetic ground states at low temperature. The RIXS spectra display a complicated interplay of low-energy excitations from charge, orbital and lattice degrees of freedom.
In particular, we discuss charge transfer related spectral components in the scenario of exotic Zhang-Rice (ZR) singlet and triplet excitations which can be reached in the final state with O K-edge RIXS. Temperature dependent measurements evidence specific temperature behavior for the related peaks, strongly depending on the nature of the magnetic ground state. Our interpretation is further supported by state-of-the-art cluster-based RIXS calculations. Comparing the excitation energy of both ZR features allows to directly determine the binding energy of the Zhang-Rice singlet in Li2CuO2 from the spectra. Finally, this study suggests RIXS as an excellent probe for investigating local magnetic order.
Please specify the session
RIXS
Please specify poster or talk
Talk
Primary author
Dr
C Monney
(Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland,)
Co-authors
Dr
J Geck
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
J Malek
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
J van der Brink
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
K J Zhou
(Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Dr
R Kraus
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
R Kuzian
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
S L Drechsler
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
T Schmitt
(Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Dr
V Bisogni
(Leibniz Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany)
Dr
V Strocov
(Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
